From 9ab8bbd43d5db447a926ec57c5e0cc444201dcf2 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Wed, 8 Apr 2026 22:08:55 -0400 Subject: [PATCH 01/54] Merge @handlebars/parser into @glimmer/syntax The @handlebars/parser package was a private, internal dependency used only by @glimmer/syntax. This commit inlines it as lib/hbs-parser/ within @glimmer/syntax and simplifies the implementation: - Removed Handlebars features Glimmer never supported (partials, decorators) from the parser helpers, visitor, and whitespace control. These now throw at parse time rather than in the Glimmer visitor phase. - Removed the printer.js (unused by Glimmer) - Fixed the `this` property on PathExpression in preparePath() so downstream code can use `path.this` directly instead of re-deriving it via regex from `original` - Removed the UpstreamProgram/UpstreamBlockStatement workaround types from handlebars-ast.ts - Removed the abstract Decorator/Partial* visitor methods from Parser - Removed the standalone @handlebars/parser workspace package - Updated build infrastructure (rollup, eslint, CI, workspace config) Co-Authored-By: Claude Opus 4.6 (1M context) --- .github/workflows/ci-jobs.yml | 4 +- .../glimmer-syntax-prettier-smoke-test.yml | 2 - eslint.config.mjs | 13 +- .../guides/development/build-constraints.md | 1 - package.json | 1 - .../syntax/lib/hbs-parser}/exception.js | 0 .../syntax/lib/hbs-parser}/helpers.js | 43 +- .../@glimmer/syntax/lib/hbs-parser/index.js | 1 + .../syntax/lib/hbs-parser}/parse.js | 0 .../syntax/lib/hbs-parser}/parser.js | 0 .../syntax/lib/hbs-parser}/src/handlebars.l | 0 .../syntax/lib/hbs-parser}/src/handlebars.yy | 0 .../lib/hbs-parser}/src/parser-suffix.js | 0 .../syntax/lib/hbs-parser}/visitor.js | 22 - .../lib/hbs-parser/whitespace-control.js | 177 +++++++ packages/@glimmer/syntax/lib/parser.ts | 6 - .../lib/parser/handlebars-node-visitors.ts | 78 +-- .../lib/parser/tokenizer-event-handlers.ts | 2 +- .../@glimmer/syntax/lib/v1/handlebars-ast.ts | 68 +-- packages/@glimmer/syntax/package.json | 1 - packages/@handlebars/parser/CHANGELOG.md | 80 --- packages/@handlebars/parser/README.md | 4 - packages/@handlebars/parser/lib/index.js | 6 - packages/@handlebars/parser/lib/printer.js | 204 ------- .../parser/lib/whitespace-control.js | 218 -------- packages/@handlebars/parser/package.json | 39 -- packages/@handlebars/parser/spec/ast.js | 291 ---------- packages/@handlebars/parser/spec/parser.js | 500 ------------------ packages/@handlebars/parser/spec/utils.js | 107 ---- packages/@handlebars/parser/spec/visitor.js | 155 ------ packages/@handlebars/parser/tsconfig.json | 24 - packages/@handlebars/parser/types/ast.d.ts | 146 ----- packages/@handlebars/parser/types/index.d.ts | 11 - pnpm-lock.yaml | 150 ------ pnpm-workspace.yaml | 2 +- rollup.config.mjs | 3 +- 36 files changed, 216 insertions(+), 2143 deletions(-) rename packages/{@handlebars/parser/lib => @glimmer/syntax/lib/hbs-parser}/exception.js (100%) rename packages/{@handlebars/parser/lib => @glimmer/syntax/lib/hbs-parser}/helpers.js (84%) create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/index.js rename packages/{@handlebars/parser/lib => @glimmer/syntax/lib/hbs-parser}/parse.js (100%) rename packages/{@handlebars/parser/lib => @glimmer/syntax/lib/hbs-parser}/parser.js (100%) rename packages/{@handlebars/parser => @glimmer/syntax/lib/hbs-parser}/src/handlebars.l (100%) rename packages/{@handlebars/parser => @glimmer/syntax/lib/hbs-parser}/src/handlebars.yy (100%) rename packages/{@handlebars/parser => @glimmer/syntax/lib/hbs-parser}/src/parser-suffix.js (100%) rename packages/{@handlebars/parser/lib => @glimmer/syntax/lib/hbs-parser}/visitor.js (73%) create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js delete mode 100644 packages/@handlebars/parser/CHANGELOG.md delete mode 100644 packages/@handlebars/parser/README.md delete mode 100644 packages/@handlebars/parser/lib/index.js delete mode 100644 packages/@handlebars/parser/lib/printer.js delete mode 100644 packages/@handlebars/parser/lib/whitespace-control.js delete mode 100644 packages/@handlebars/parser/package.json delete mode 100644 packages/@handlebars/parser/spec/ast.js delete mode 100644 packages/@handlebars/parser/spec/parser.js delete mode 100644 packages/@handlebars/parser/spec/utils.js delete mode 100644 packages/@handlebars/parser/spec/visitor.js delete mode 100644 packages/@handlebars/parser/tsconfig.json delete mode 100644 packages/@handlebars/parser/types/ast.d.ts delete mode 100644 packages/@handlebars/parser/types/index.d.ts diff --git a/.github/workflows/ci-jobs.yml b/.github/workflows/ci-jobs.yml index 0cafa28c79d..716194715cf 100644 --- a/.github/workflows/ci-jobs.yml +++ b/.github/workflows/ci-jobs.yml @@ -37,8 +37,6 @@ jobs: run: pnpm build:types - name: Check internal types run: pnpm type-check:internals - - name: Check @handlebars/parser types - run: pnpm type-check:handlebars - name: Check published types run: pnpm type-check:types @@ -222,7 +220,7 @@ jobs: SHOULD_TRANSPILE_FOR_NODE: true run: pnpm build - name: test - run: pnpm test:node && pnpm --filter "@handlebars/parser" test + run: pnpm test:node blueprint-test: name: Blueprint Tests diff --git a/.github/workflows/glimmer-syntax-prettier-smoke-test.yml b/.github/workflows/glimmer-syntax-prettier-smoke-test.yml index 3b87973841f..c5034cfd572 100644 --- a/.github/workflows/glimmer-syntax-prettier-smoke-test.yml +++ b/.github/workflows/glimmer-syntax-prettier-smoke-test.yml @@ -17,7 +17,6 @@ on: - "packages/@glimmer/interfaces/**" - "packages/@glimmer/util/**" - "packages/@glimmer/wire-format/**" - - "packages/@handlebars/parser/**" pull_request: paths: - ".github/workflows/glimmer-syntax-prettier-smoke-test.yml" @@ -27,7 +26,6 @@ on: - "packages/@glimmer/interfaces/**" - "packages/@glimmer/util/**" - "packages/@glimmer/wire-format/**" - - "packages/@handlebars/parser/**" workflow_dispatch: permissions: diff --git a/eslint.config.mjs b/eslint.config.mjs index 7407d64b580..60277459c1e 100644 --- a/eslint.config.mjs +++ b/eslint.config.mjs @@ -28,8 +28,8 @@ export default [ '**/type-tests/', 'internal-docs/guides/**', 'packages/@glimmer-workspace/**', - 'packages/@handlebars/parser/lib/parser.js', - 'packages/@handlebars/parser/src/**', + 'packages/@glimmer/syntax/lib/hbs-parser/parser.js', + 'packages/@glimmer/syntax/lib/hbs-parser/src/**', 'tracerbench-testing/', ], }, @@ -189,15 +189,6 @@ export default [ 'import/namespace': 'off', }, }, - { - files: ['packages/@handlebars/parser/spec/**/*.js'], - - languageOptions: { - globals: { - ...globals.mocha, - }, - }, - }, { files: [ 'packages/*/tests/**/*.[jt]s', diff --git a/internal-docs/guides/development/build-constraints.md b/internal-docs/guides/development/build-constraints.md index 8e94bd664f6..f2e59cd76d4 100644 --- a/internal-docs/guides/development/build-constraints.md +++ b/internal-docs/guides/development/build-constraints.md @@ -137,7 +137,6 @@ The build system has specific rules for what gets inlined vs treated as external - TypeScript helper library (`tslib`) **Always External:** -- `@handlebars/parser` - `simple-html-tokenizer` - `babel-plugin-debug-macros` - Other `@glimmer/*` packages (to avoid duplication) diff --git a/package.json b/package.json index 8cf0f30d3d4..fc556ae09e1 100644 --- a/package.json +++ b/package.json @@ -55,7 +55,6 @@ "test:browserstack": "node bin/run-browserstack-tests.js", "test:wip": "vite build --mode development --minify false && testem ci", "type-check:internals": "tsc --noEmit", - "type-check:handlebars": "tsc --noEmit --project packages/@handlebars/parser/tsconfig.json", "type-check:types": "tsc --noEmit --project type-tests", "type-check": "npm-run-all type-check:*" }, diff --git a/packages/@handlebars/parser/lib/exception.js b/packages/@glimmer/syntax/lib/hbs-parser/exception.js similarity index 100% rename from packages/@handlebars/parser/lib/exception.js rename to packages/@glimmer/syntax/lib/hbs-parser/exception.js diff --git a/packages/@handlebars/parser/lib/helpers.js b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js similarity index 84% rename from packages/@handlebars/parser/lib/helpers.js rename to packages/@glimmer/syntax/lib/hbs-parser/helpers.js index fb2998e2ebe..f307ff65981 100644 --- a/packages/@handlebars/parser/lib/helpers.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js @@ -56,11 +56,10 @@ export function preparePath(data, sexpr, parts, loc) { let tail = []; let depth = 0; + let isThis = false; for (let i = 0, l = parts.length; i < l; i++) { let part = parts[i].part; - // If we have [] syntax then we do not treat path references as operators, - // i.e. foo.[this] resolves to approximately context.foo['this'] let isLiteral = parts[i].original !== part; let separator = parts[i].separator; @@ -73,6 +72,8 @@ export function preparePath(data, sexpr, parts, loc) { throw new Exception('Invalid path: ' + original, { loc }); } else if (part === '..') { depth++; + } else if (part === 'this') { + isThis = true; } } else { tail.push(`${partPrefix}${part}`); @@ -83,7 +84,7 @@ export function preparePath(data, sexpr, parts, loc) { return { type: 'PathExpression', - this: original.startsWith('this.'), + this: isThis, data, depth, head, @@ -95,13 +96,17 @@ export function preparePath(data, sexpr, parts, loc) { } export function prepareMustache(path, params, hash, open, strip, locInfo) { - // Must use charAt to support IE pre-10 let escapeFlag = open.charAt(3) || open.charAt(2), escaped = escapeFlag !== '{' && escapeFlag !== '&'; - let decorator = /\*/.test(open); + if (/\*/.test(open)) { + throw new Exception('Handlebars decorators are not supported in Glimmer', { + loc: this.locInfo(locInfo), + }); + } + return { - type: decorator ? 'Decorator' : 'MustacheStatement', + type: 'MustacheStatement', path, params, hash, @@ -140,17 +145,17 @@ export function prepareBlock(openBlock, program, inverseAndProgram, close, inver validateClose(openBlock, close); } - let decorator = /\*/.test(openBlock.open); + if (/\*/.test(openBlock.open)) { + throw new Exception('Handlebars decorator blocks are not supported in Glimmer', { + loc: this.locInfo(locInfo), + }); + } program.blockParams = openBlock.blockParams; let inverse, inverseStrip; if (inverseAndProgram) { - if (decorator) { - throw new Exception('Unexpected inverse block on decorator', inverseAndProgram); - } - if (inverseAndProgram.chain) { inverseAndProgram.program.body[0].closeStrip = close.strip; } @@ -166,7 +171,7 @@ export function prepareBlock(openBlock, program, inverseAndProgram, close, inver } return { - type: decorator ? 'DecoratorBlock' : 'BlockStatement', + type: 'BlockStatement', path: openBlock.path, params: openBlock.params, hash: openBlock.hash, @@ -184,7 +189,6 @@ export function prepareProgram(statements, loc) { const firstLoc = statements[0].loc, lastLoc = statements[statements.length - 1].loc; - /* istanbul ignore else */ if (firstLoc && lastLoc) { loc = { source: firstLoc.source, @@ -209,16 +213,7 @@ export function prepareProgram(statements, loc) { } export function preparePartialBlock(open, program, close, locInfo) { - validateClose(open, close); - - return { - type: 'PartialBlockStatement', - name: open.path, - params: open.params, - hash: open.hash, - program, - openStrip: open.strip, - closeStrip: close && close.strip, + throw new Exception('Handlebars partial blocks are not supported in Glimmer', { loc: this.locInfo(locInfo), - }; + }); } diff --git a/packages/@glimmer/syntax/lib/hbs-parser/index.js b/packages/@glimmer/syntax/lib/hbs-parser/index.js new file mode 100644 index 00000000000..23ce786fcb2 --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/index.js @@ -0,0 +1 @@ +export { parse, parseWithoutProcessing } from './parse.js'; diff --git a/packages/@handlebars/parser/lib/parse.js b/packages/@glimmer/syntax/lib/hbs-parser/parse.js similarity index 100% rename from packages/@handlebars/parser/lib/parse.js rename to packages/@glimmer/syntax/lib/hbs-parser/parse.js diff --git a/packages/@handlebars/parser/lib/parser.js b/packages/@glimmer/syntax/lib/hbs-parser/parser.js similarity index 100% rename from packages/@handlebars/parser/lib/parser.js rename to packages/@glimmer/syntax/lib/hbs-parser/parser.js diff --git a/packages/@handlebars/parser/src/handlebars.l b/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.l similarity index 100% rename from packages/@handlebars/parser/src/handlebars.l rename to packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.l diff --git a/packages/@handlebars/parser/src/handlebars.yy b/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.yy similarity index 100% rename from packages/@handlebars/parser/src/handlebars.yy rename to packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.yy diff --git a/packages/@handlebars/parser/src/parser-suffix.js b/packages/@glimmer/syntax/lib/hbs-parser/src/parser-suffix.js similarity index 100% rename from packages/@handlebars/parser/src/parser-suffix.js rename to packages/@glimmer/syntax/lib/hbs-parser/src/parser-suffix.js diff --git a/packages/@handlebars/parser/lib/visitor.js b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js similarity index 73% rename from packages/@handlebars/parser/lib/visitor.js rename to packages/@glimmer/syntax/lib/hbs-parser/visitor.js index e9b5d6820af..7175793325f 100644 --- a/packages/@handlebars/parser/lib/visitor.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js @@ -8,12 +8,9 @@ Visitor.prototype = { constructor: Visitor, mutating: false, - // Visits a given value. If mutating, will replace the value if necessary. acceptKey: function (node, name) { let value = this.accept(node[name]); if (this.mutating) { - // Hacky sanity check: This may have a few false positives for type for the helper - // methods but will generally do the right thing without a lot of overhead. if (value && !Visitor.prototype[value.type]) { throw new Exception( 'Unexpected node type "' + @@ -28,8 +25,6 @@ Visitor.prototype = { } }, - // Performs an accept operation with added sanity check to ensure - // required keys are not removed. acceptRequired: function (node, name) { this.acceptKey(node, name); @@ -38,8 +33,6 @@ Visitor.prototype = { } }, - // Traverses a given array. If mutating, empty responses will be removed - // for child elements. acceptArray: function (array) { for (let i = 0, l = array.length; i < l; i++) { this.acceptKey(array, i); @@ -57,7 +50,6 @@ Visitor.prototype = { return; } - /* istanbul ignore next: Sanity code */ if (!this[object.type]) { throw new Exception('Unknown type: ' + object.type, object); } @@ -83,17 +75,8 @@ Visitor.prototype = { }, MustacheStatement: visitSubExpression, - Decorator: visitSubExpression, BlockStatement: visitBlock, - DecoratorBlock: visitBlock, - - PartialStatement: visitPartial, - PartialBlockStatement: function (partial) { - visitPartial.call(this, partial); - - this.acceptKey(partial, 'program'); - }, ContentStatement: function (/* content */) {}, CommentStatement: function (/* comment */) {}, @@ -127,10 +110,5 @@ function visitBlock(block) { this.acceptKey(block, 'program'); this.acceptKey(block, 'inverse'); } -function visitPartial(partial) { - this.acceptRequired(partial, 'name'); - this.acceptArray(partial.params); - this.acceptKey(partial, 'hash'); -} export default Visitor; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js new file mode 100644 index 00000000000..34cf78045a2 --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js @@ -0,0 +1,177 @@ +import Visitor from './visitor.js'; + +function WhitespaceControl(options = {}) { + this.options = options; +} +WhitespaceControl.prototype = new Visitor(); + +WhitespaceControl.prototype.Program = function (program) { + const doStandalone = !this.options.ignoreStandalone; + + let isRoot = !this.isRootSeen; + this.isRootSeen = true; + + let body = program.body; + for (let i = 0, l = body.length; i < l; i++) { + let current = body[i], + strip = this.accept(current); + + if (!strip) { + continue; + } + + let _isPrevWhitespace = isPrevWhitespace(body, i, isRoot), + _isNextWhitespace = isNextWhitespace(body, i, isRoot), + openStandalone = strip.openStandalone && _isPrevWhitespace, + closeStandalone = strip.closeStandalone && _isNextWhitespace, + inlineStandalone = strip.inlineStandalone && _isPrevWhitespace && _isNextWhitespace; + + if (strip.close) { + omitRight(body, i, true); + } + if (strip.open) { + omitLeft(body, i, true); + } + + if (doStandalone && inlineStandalone) { + omitRight(body, i); + omitLeft(body, i); + } + if (doStandalone && openStandalone) { + omitRight((current.program || current.inverse).body); + omitLeft(body, i); + } + if (doStandalone && closeStandalone) { + omitRight(body, i); + omitLeft((current.inverse || current.program).body); + } + } + + return program; +}; + +WhitespaceControl.prototype.BlockStatement = function (block) { + this.accept(block.program); + this.accept(block.inverse); + + let program = block.program || block.inverse, + inverse = block.program && block.inverse, + firstInverse = inverse, + lastInverse = inverse; + + if (inverse && inverse.chained) { + firstInverse = inverse.body[0].program; + + while (lastInverse.chained) { + lastInverse = lastInverse.body[lastInverse.body.length - 1].program; + } + } + + let strip = { + open: block.openStrip.open, + close: block.closeStrip.close, + openStandalone: isNextWhitespace(program.body), + closeStandalone: isPrevWhitespace((firstInverse || program).body), + }; + + if (block.openStrip.close) { + omitRight(program.body, null, true); + } + + if (inverse) { + let inverseStrip = block.inverseStrip; + + if (inverseStrip.open) { + omitLeft(program.body, null, true); + } + + if (inverseStrip.close) { + omitRight(firstInverse.body, null, true); + } + if (block.closeStrip.open) { + omitLeft(lastInverse.body, null, true); + } + + if ( + !this.options.ignoreStandalone && + isPrevWhitespace(program.body) && + isNextWhitespace(firstInverse.body) + ) { + omitLeft(program.body); + omitRight(firstInverse.body); + } + } else if (block.closeStrip.open) { + omitLeft(program.body, null, true); + } + + return strip; +}; + +WhitespaceControl.prototype.MustacheStatement = function (mustache) { + return mustache.strip; +}; + +WhitespaceControl.prototype.CommentStatement = function (node) { + let strip = node.strip || {}; + return { + inlineStandalone: true, + open: strip.open, + close: strip.close, + }; +}; + +function isPrevWhitespace(body, i, isRoot) { + if (i === undefined) { + i = body.length; + } + + let prev = body[i - 1], + sibling = body[i - 2]; + if (!prev) { + return isRoot; + } + + if (prev.type === 'ContentStatement') { + return (sibling || !isRoot ? /\r?\n\s*?$/ : /(^|\r?\n)\s*?$/).test(prev.original); + } +} +function isNextWhitespace(body, i, isRoot) { + if (i === undefined) { + i = -1; + } + + let next = body[i + 1], + sibling = body[i + 2]; + if (!next) { + return isRoot; + } + + if (next.type === 'ContentStatement') { + return (sibling || !isRoot ? /^\s*?\r?\n/ : /^\s*?(\r?\n|$)/).test(next.original); + } +} + +function omitRight(body, i, multiple) { + let current = body[i == null ? 0 : i + 1]; + if (!current || current.type !== 'ContentStatement' || (!multiple && current.rightStripped)) { + return; + } + + let original = current.value; + current.value = current.value.replace(multiple ? /^\s+/ : /^[ \t]*\r?\n?/, ''); + current.rightStripped = current.value !== original; +} + +function omitLeft(body, i, multiple) { + let current = body[i == null ? body.length - 1 : i - 1]; + if (!current || current.type !== 'ContentStatement' || (!multiple && current.leftStripped)) { + return; + } + + let original = current.value; + current.value = current.value.replace(multiple ? /\s+$/ : /[ \t]+$/, ''); + current.leftStripped = current.value !== original; + return current.leftStripped; +} + +export default WhitespaceControl; diff --git a/packages/@glimmer/syntax/lib/parser.ts b/packages/@glimmer/syntax/lib/parser.ts index ba4197100bb..317b072e4f9 100644 --- a/packages/@glimmer/syntax/lib/parser.ts +++ b/packages/@glimmer/syntax/lib/parser.ts @@ -90,13 +90,7 @@ export abstract class Parser { abstract Program(node: HBS.Program): HBS.Output<'Program'>; abstract MustacheStatement(node: HBS.MustacheStatement): HBS.Output<'MustacheStatement'>; - abstract Decorator(node: HBS.Decorator): HBS.Output<'Decorator'>; abstract BlockStatement(node: HBS.BlockStatement): HBS.Output<'BlockStatement'>; - abstract DecoratorBlock(node: HBS.DecoratorBlock): HBS.Output<'DecoratorBlock'>; - abstract PartialStatement(node: HBS.PartialStatement): HBS.Output<'PartialStatement'>; - abstract PartialBlockStatement( - node: HBS.PartialBlockStatement - ): HBS.Output<'PartialBlockStatement'>; abstract ContentStatement(node: HBS.ContentStatement): HBS.Output<'ContentStatement'>; abstract CommentStatement(node: HBS.CommentStatement): HBS.Output<'CommentStatement'>; abstract SubExpression(node: HBS.SubExpression): HBS.Output<'SubExpression'>; diff --git a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts index 7101169e21b..f9ad6d9c920 100644 --- a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts +++ b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts @@ -37,7 +37,7 @@ export abstract class HandlebarsNodeVisitors extends Parser { abstract override beginAttributeValue(quoted: boolean): void; abstract override finishAttributeValue(): void; - parse(program: HBS.UpstreamProgram, blockParams: string[]): ASTv1.Template { + parse(program: HBS.Program, blockParams: string[]): ASTv1.Template { localAssert(program.loc, '[BUG] Program in parser unexpectedly did not have loc'); let node = b.template({ @@ -48,19 +48,12 @@ export abstract class HandlebarsNodeVisitors extends Parser { let template = this.parseProgram(node, program); - // TODO: we really need to verify that the tokenizer is in an acceptable - // state when we are "done" parsing. For example, right now, `(node: T, program: HBS.UpstreamProgram): T { + private parseProgram(node: T, program: HBS.Program): T { if (program.body.length === 0) { return node; } @@ -113,7 +106,7 @@ export abstract class HandlebarsNodeVisitors extends Parser { return node; } - BlockStatement(block: HBS.UpstreamBlockStatement): ASTv1.BlockStatement | void { + BlockStatement(block: HBS.BlockStatement): ASTv1.BlockStatement | void { if (this.tokenizer.state === 'comment') { localAssert(block.loc, '[BUG] BlockStatement in parser unexpectedly did not have loc'); this.appendToCommentData(this.sourceForNode(block as HBS.Node)); @@ -151,19 +144,6 @@ export abstract class HandlebarsNodeVisitors extends Parser { repairedBlock = repairBlock(this.source, block, span); - // Now we have a span for something like this: - // - // {{#foo bar baz=bat as |wow wat|}} - // ~~~~~~~~~~~~~~~ - // - // Or, if we are unlucky: - // - // {{#foo bar baz=bat as |wow wat|}}{{/foo}} - // ~~~~~~~~~~~~~~~~~~~~~~~ - // - // Either way, within this span, there should be exactly two pipes - // fencing our block params, neatly whitespace separated and with - // legal identifiers only const content = span.asString(); let skipStart = content.indexOf('|') + 1; const limit = content.indexOf('|', skipStart); @@ -292,8 +272,6 @@ export abstract class HandlebarsNodeVisitors extends Parser { this.appendDynamicAttributeValuePart(mustache); break; - // TODO: Only append child when the tokenizer state makes - // sense to do so, otherwise throw an error. default: appendChild(this.currentElement(), mustache); } @@ -360,34 +338,6 @@ export abstract class HandlebarsNodeVisitors extends Parser { return comment; } - PartialStatement(partial: HBS.PartialStatement): never { - throw generateSyntaxError( - `Handlebars partials are not supported`, - this.source.spanFor(partial.loc) - ); - } - - PartialBlockStatement(partialBlock: HBS.PartialBlockStatement): never { - throw generateSyntaxError( - `Handlebars partial blocks are not supported`, - this.source.spanFor(partialBlock.loc) - ); - } - - Decorator(decorator: HBS.Decorator): never { - throw generateSyntaxError( - `Handlebars decorators are not supported`, - this.source.spanFor(decorator.loc) - ); - } - - DecoratorBlock(decoratorBlock: HBS.DecoratorBlock): never { - throw generateSyntaxError( - `Handlebars decorator blocks are not supported`, - this.source.spanFor(decoratorBlock.loc) - ); - } - SubExpression(sexpr: HBS.SubExpression): ASTv1.SubExpression { const { path, params, hash } = acceptCallNodes(this, sexpr); return b.sexpr({ path, params, hash, loc: this.source.spanFor(sexpr.loc) }); @@ -426,21 +376,9 @@ export abstract class HandlebarsNodeVisitors extends Parser { parts = path.parts; } - let thisHead = false; - - // This is to fix a bug in the Handlebars AST where the path expressions in - // `{{this.foo}}` (and similarly `{{foo-bar this.foo named=this.foo}}` etc) - // are simply turned into `{{foo}}`. The fix is to push it back onto the - // parts array and let the runtime see the difference. However, we cannot - // simply use the string `this` as it means literally the property called - // "this" in the current context (it can be expressed in the syntax as - // `{{[this]}}`, where the square bracket are generally for this kind of - // escaping – such as `{{foo.["bar.baz"]}}` would mean lookup a property - // named literally "bar.baz" on `this.foo`). By convention, we use `null` - // for this purpose. - if (/^this(?:\..+)?$/u.test(original)) { - thisHead = true; - } + // The parser now correctly sets path.this for expressions like {{this.foo}}. + // We use that directly instead of re-deriving from the original string. + let thisHead = path.this; let pathHead: ASTv1.PathHead; if (thisHead) { @@ -679,7 +617,7 @@ function addElementModifier( function repairBlock( source: src.Source, - block: HBS.UpstreamBlockStatement, + block: HBS.BlockStatement, fallbackStart: SourceSpan ): HBS.BlockStatement { // Extend till the beginning of the block @@ -704,5 +642,5 @@ function repairBlock( block.inverse.loc = endProgram.collapsed(); } - return block as HBS.BlockStatement; + return block; } diff --git a/packages/@glimmer/syntax/lib/parser/tokenizer-event-handlers.ts b/packages/@glimmer/syntax/lib/parser/tokenizer-event-handlers.ts index 6052abbe97f..bb13a6a908f 100644 --- a/packages/@glimmer/syntax/lib/parser/tokenizer-event-handlers.ts +++ b/packages/@glimmer/syntax/lib/parser/tokenizer-event-handlers.ts @@ -9,7 +9,7 @@ import { localAssert, } from '@glimmer/debug-util'; import { assign } from '@glimmer/util'; -import { parse, parseWithoutProcessing } from '@handlebars/parser'; +import { parse, parseWithoutProcessing } from '../hbs-parser/index.js'; import { EntityParser } from 'simple-html-tokenizer'; import type { EndTag, StartTag } from '../parser'; diff --git a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts index de607ed0ea7..5dcd7432b06 100644 --- a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts +++ b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts @@ -2,6 +2,9 @@ * This file contains types for the raw AST returned from the Handlebars parser. * These types were originally imported from * https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/handlebars/index.d.ts. + * + * The parser is now inlined in @glimmer/syntax (lib/hbs-parser/) and these types reflect the + * Glimmer-specific subset of Handlebars: no partials, no decorators. */ import type * as ASTv1 from './api'; @@ -13,11 +16,7 @@ export interface CommonNode { export interface NodeMap { Program: { input: Program; output: ASTv1.Block }; MustacheStatement: { input: MustacheStatement; output: ASTv1.MustacheStatement | void }; - Decorator: { input: Decorator; output: never }; BlockStatement: { input: BlockStatement; output: ASTv1.BlockStatement | void }; - DecoratorBlock: { input: DecoratorBlock; output: never }; - PartialStatement: { input: PartialStatement; output: never }; - PartialBlockStatement: { input: PartialBlockStatement; output: never }; ContentStatement: { input: ContentStatement; output: void }; CommentStatement: { input: CommentStatement; output: ASTv1.MustacheCommentStatement | null }; SubExpression: { input: SubExpression; output: ASTv1.SubExpression }; @@ -29,33 +28,9 @@ export interface NodeMap { NullLiteral: { input: NullLiteral; output: ASTv1.NullLiteral }; } -/** - * `loc` is sometimes missing in the upstream Handlebars parser. This is a bug that should be - * fixed. In addition, we should use the types from the upstream parser rather than our own types, - * and if they're not accurate, we should fix them upstream. - * - * @see {https://github.com/handlebars-lang/handlebars-parser/blob/master/types/ast.d.ts} - */ -export interface UpstreamProgram extends Omit { - loc?: SourceLocation; -} - -export interface UpstreamBlockStatement extends Omit { - program: UpstreamProgram; - inverse?: UpstreamProgram; -} - -export interface UpstreamNodeMap extends Omit { - Program: { input: UpstreamProgram; output: ASTv1.Block }; -} - export type NodeType = keyof NodeMap; export type Node = NodeMap[T]['input']; -export type UpstreamNodeType = keyof UpstreamNodeMap; -export type UpstreamNode = - UpstreamNodeMap[T]['input']; - export type Output = NodeMap[T]['output']; export interface SourceLocation { @@ -76,14 +51,7 @@ export interface Program extends CommonNode { chained?: boolean; } -export type Statement = - | MustacheStatement - | BlockStatement - | DecoratorBlock - | PartialStatement - | PartialBlockStatement - | ContentStatement - | CommentStatement; +export type Statement = MustacheStatement | BlockStatement | ContentStatement | CommentStatement; export interface CommonMustache extends CommonNode { path: Expression; @@ -97,10 +65,6 @@ export interface MustacheStatement extends CommonMustache { type: 'MustacheStatement'; } -export interface Decorator extends CommonMustache { - type: 'DecoratorStatement'; -} - export interface CommonBlock extends CommonNode { chained: boolean; path: PathExpression | SubExpression; @@ -117,29 +81,6 @@ export interface BlockStatement extends CommonBlock { type: 'BlockStatement'; } -export interface DecoratorBlock extends CommonBlock { - type: 'DecoratorBlock'; -} - -export interface PartialStatement extends CommonNode { - type: 'PartialStatement'; - name: PathExpression | SubExpression; - params: Expression[]; - hash: Hash; - indent: string; - strip: StripFlags; -} - -export interface PartialBlockStatement extends CommonNode { - type: 'PartialBlockStatement'; - name: PathExpression | SubExpression; - params: Expression[]; - hash: Hash; - program: Program; - openStrip: StripFlags; - closeStrip: StripFlags; -} - export interface ContentStatement extends CommonNode { type: 'ContentStatement'; value: string; @@ -163,6 +104,7 @@ export interface SubExpression extends CommonNode { export interface PathExpression extends CommonNode { type: 'PathExpression'; + this: boolean; data: boolean; depth: number; parts: string[]; diff --git a/packages/@glimmer/syntax/package.json b/packages/@glimmer/syntax/package.json index 886a9b99963..36db32df47e 100644 --- a/packages/@glimmer/syntax/package.json +++ b/packages/@glimmer/syntax/package.json @@ -35,7 +35,6 @@ "@glimmer/interfaces": "workspace:*", "@glimmer/util": "workspace:*", "@glimmer/wire-format": "workspace:*", - "@handlebars/parser": "workspace:*", "simple-html-tokenizer": "^0.5.11" }, "devDependencies": { diff --git a/packages/@handlebars/parser/CHANGELOG.md b/packages/@handlebars/parser/CHANGELOG.md deleted file mode 100644 index cd310aaf6b9..00000000000 --- a/packages/@handlebars/parser/CHANGELOG.md +++ /dev/null @@ -1,80 +0,0 @@ -# Changelog - -## Release (2025-11-29) - -* @handlebars/parser 2.2.2 (patch) - -#### :bug: Bug Fix -* `@handlebars/parser` - * [#27](https://github.com/handlebars-lang/handlebars-parser/pull/27) Fix commonjs build ([@kaermorchen](https://github.com/kaermorchen)) - -#### Committers: 1 -- Stanislav Romanov ([@kaermorchen](https://github.com/kaermorchen)) - -## Release (2025-08-01) - -* @handlebars/parser 2.2.1 (patch) - -#### :bug: Bug Fix -* `@handlebars/parser` - * [#24](https://github.com/handlebars-lang/handlebars-parser/pull/24) fix node engine and create a test matrix in CI ([@mansona](https://github.com/mansona)) - -#### Committers: 1 -- Chris Manson ([@mansona](https://github.com/mansona)) - -## Release (2025-03-19) - -* @handlebars/parser 2.2.0 (minor) - -#### :rocket: Enhancement -* `@handlebars/parser` - * [#15](https://github.com/handlebars-lang/handlebars-parser/pull/15) Implement hash and array literal syntax ([@wycats](https://github.com/wycats)) - * [#14](https://github.com/handlebars-lang/handlebars-parser/pull/14) Add support for a `#` prefix in path segments ([@wycats](https://github.com/wycats)) - -#### :bug: Bug Fix -* `@handlebars/parser` - * [#6](https://github.com/handlebars-lang/handlebars-parser/pull/6) [bugfix] Don't emit `parts: [undefined]` for `{{this}}` ([@dfreeman](https://github.com/dfreeman)) - -#### :house: Internal -* `@handlebars/parser` - * [#17](https://github.com/handlebars-lang/handlebars-parser/pull/17) Add release plan, remove release-it ([@NullVoxPopuli](https://github.com/NullVoxPopuli)) - -#### Committers: 3 -- Dan Freeman ([@dfreeman](https://github.com/dfreeman)) -- Yehuda Katz ([@wycats](https://github.com/wycats)) -- [@NullVoxPopuli](https://github.com/NullVoxPopuli) - -## v2.1.0 (2021-02-22) - -#### :rocket: Enhancement -* [#4](https://github.com/handlebars-lang/handlebars-parser/pull/4) [FEATURE] Allows SubExpressions to be PathExpression roots ([@pzuraq](https://github.com/pzuraq)) - -#### Committers: 1 -- Chris Garrett ([@pzuraq](https://github.com/pzuraq)) - -## v2.0.0 (2020-12-09) - -#### :boom: Breaking Change -* [#3](https://github.com/handlebars-lang/handlebars-parser/pull/3) Make sub-expressions callable ([@pzuraq](https://github.com/pzuraq)) - -#### Committers: 1 -- Chris Garrett ([@pzuraq](https://github.com/pzuraq)) - -## v1.1.0 (2020-09-18) - -#### :rocket: Enhancement -* [#2](https://github.com/handlebars-lang/handlebars-parser/pull/2) [FEAT] Adds types ([@pzuraq](https://github.com/pzuraq)) - -#### Committers: 1 -- Chris Garrett ([@pzuraq](https://github.com/pzuraq)) - - -## v1.0.0 (2020-09-14) - -#### :rocket: Enhancement -* [#1](https://github.com/handlebars-lang/handlebars-parser/pull/1) [FEAT] Adds initial setup, lint, ci ([@pzuraq](https://github.com/pzuraq)) - -#### Committers: 1 -- Chris Garrett ([@pzuraq](https://github.com/pzuraq)) - - diff --git a/packages/@handlebars/parser/README.md b/packages/@handlebars/parser/README.md deleted file mode 100644 index f77e27ef052..00000000000 --- a/packages/@handlebars/parser/README.md +++ /dev/null @@ -1,4 +0,0 @@ -# Handlebars Parser - -The official Handlebars.js parser. This package contains the definition for -for the Handlebars language AST, and the parser for parsing into that AST. diff --git a/packages/@handlebars/parser/lib/index.js b/packages/@handlebars/parser/lib/index.js deleted file mode 100644 index cf22bff15b9..00000000000 --- a/packages/@handlebars/parser/lib/index.js +++ /dev/null @@ -1,6 +0,0 @@ -export { default as Visitor } from './visitor.js'; -export { default as WhitespaceControl } from './whitespace-control.js'; -export { default as parser } from './parser.js'; -export { default as Exception } from './exception.js'; -export { print, PrintVisitor } from './printer.js'; -export { parse, parseWithoutProcessing } from './parse.js'; diff --git a/packages/@handlebars/parser/lib/printer.js b/packages/@handlebars/parser/lib/printer.js deleted file mode 100644 index bea44d3a6bf..00000000000 --- a/packages/@handlebars/parser/lib/printer.js +++ /dev/null @@ -1,204 +0,0 @@ -import Visitor from './visitor.js'; - -export function print(ast) { - return new PrintVisitor().accept(ast); -} - -export function PrintVisitor() { - this.padding = 0; -} - -PrintVisitor.prototype = new Visitor(); - -PrintVisitor.prototype.pad = function (string) { - let out = ''; - - for (let i = 0, l = this.padding; i < l; i++) { - out += ' '; - } - - out += string + '\n'; - return out; -}; - -PrintVisitor.prototype.Program = function (program) { - let out = '', - body = program.body, - i, - l; - - if (program.blockParams) { - let blockParams = 'BLOCK PARAMS: ['; - for (i = 0, l = program.blockParams.length; i < l; i++) { - blockParams += ' ' + program.blockParams[i]; - } - blockParams += ' ]'; - out += this.pad(blockParams); - } - - for (i = 0, l = body.length; i < l; i++) { - out += this.accept(body[i]); - } - - this.padding--; - - return out; -}; - -PrintVisitor.prototype.MustacheStatement = function (mustache) { - if (mustache.params.length > 0 || mustache.hash) { - return this.pad('{{ ' + this.callBody(mustache) + ' }}'); - } else { - return this.pad('{{ ' + this.accept(mustache.path) + ' }}'); - } -}; -PrintVisitor.prototype.Decorator = function (mustache) { - return this.pad('{{ DIRECTIVE ' + this.callBody(mustache) + ' }}'); -}; - -PrintVisitor.prototype.BlockStatement = PrintVisitor.prototype.DecoratorBlock = function (block) { - let out = ''; - - out += this.pad((block.type === 'DecoratorBlock' ? 'DIRECTIVE ' : '') + 'BLOCK:'); - this.padding++; - out += this.pad(this.callBody(block)); - if (block.program) { - out += this.pad('PROGRAM:'); - this.padding++; - out += this.accept(block.program); - this.padding--; - } - if (block.inverse) { - if (block.program) { - this.padding++; - } - out += this.pad('{{^}}'); - this.padding++; - out += this.accept(block.inverse); - this.padding--; - if (block.program) { - this.padding--; - } - } - this.padding--; - - return out; -}; - -PrintVisitor.prototype.PartialStatement = function (partial) { - let content = 'PARTIAL:' + partial.name.original; - if (partial.params[0]) { - content += ' ' + this.accept(partial.params[0]); - } - if (partial.hash) { - content += ' ' + this.accept(partial.hash); - } - return this.pad('{{> ' + content + ' }}'); -}; -PrintVisitor.prototype.PartialBlockStatement = function (partial) { - let content = 'PARTIAL BLOCK:' + partial.name.original; - if (partial.params[0]) { - content += ' ' + this.accept(partial.params[0]); - } - if (partial.hash) { - content += ' ' + this.accept(partial.hash); - } - - content += ' ' + this.pad('PROGRAM:'); - this.padding++; - content += this.accept(partial.program); - this.padding--; - - return this.pad('{{> ' + content + ' }}'); -}; - -PrintVisitor.prototype.ContentStatement = function (content) { - return this.pad("CONTENT[ '" + content.value + "' ]"); -}; - -PrintVisitor.prototype.CommentStatement = function (comment) { - return this.pad("{{! '" + comment.value + "' }}"); -}; - -PrintVisitor.prototype.SubExpression = function (sexpr) { - return `(${this.callBody(sexpr)})`; -}; - -PrintVisitor.prototype.callBody = function (callExpr) { - let params = callExpr.params, - paramStrings = [], - hash; - - for (let i = 0, l = params.length; i < l; i++) { - paramStrings.push(this.accept(params[i])); - } - - params = paramStrings.length === 0 ? '' : ' [' + paramStrings.join(', ') + ']'; - - hash = callExpr.hash ? ' ' + this.accept(callExpr.hash) : ''; - - return this.accept(callExpr.path) + params + hash; -}; - -PrintVisitor.prototype.PathExpression = function (id) { - let head = typeof id.head === 'string' ? id.head : `[${this.accept(id.head)}]`; - let path = [head, ...id.tail].join('/'); - return 'p%' + prefix(id) + path; -}; - -function prefix(path) { - if (path.data) { - return '@'; - } else if (path.this) { - return 'this.'; - } else { - return ''; - } -} - -PrintVisitor.prototype.StringLiteral = function (string) { - return '"' + string.value + '"'; -}; - -PrintVisitor.prototype.NumberLiteral = function (number) { - return 'n%' + number.value; -}; - -PrintVisitor.prototype.BooleanLiteral = function (bool) { - return 'b%' + bool.value; -}; - -PrintVisitor.prototype.UndefinedLiteral = function () { - return 'UNDEFINED'; -}; - -PrintVisitor.prototype.NullLiteral = function () { - return 'NULL'; -}; - -PrintVisitor.prototype.ArrayLiteral = function (array) { - return `Array[${array.items.map((item) => this.accept(item)).join(', ')}]`; -}; - -PrintVisitor.prototype.HashLiteral = function (hash) { - return `Hash{${this.hashPairs(hash)}}`; -}; - -PrintVisitor.prototype.Hash = function (hash) { - return `HASH{${this.hashPairs(hash)}}`; -}; - -PrintVisitor.prototype.hashPairs = function (hash) { - let pairs = hash.pairs, - joinedPairs = []; - - for (let i = 0, l = pairs.length; i < l; i++) { - joinedPairs.push(this.HashPair(pairs[i])); - } - - return joinedPairs.join(' '); -}; - -PrintVisitor.prototype.HashPair = function (pair) { - return pair.key + '=' + this.accept(pair.value); -}; diff --git a/packages/@handlebars/parser/lib/whitespace-control.js b/packages/@handlebars/parser/lib/whitespace-control.js deleted file mode 100644 index c4a8ac0bba3..00000000000 --- a/packages/@handlebars/parser/lib/whitespace-control.js +++ /dev/null @@ -1,218 +0,0 @@ -import Visitor from './visitor.js'; - -function WhitespaceControl(options = {}) { - this.options = options; -} -WhitespaceControl.prototype = new Visitor(); - -WhitespaceControl.prototype.Program = function (program) { - const doStandalone = !this.options.ignoreStandalone; - - let isRoot = !this.isRootSeen; - this.isRootSeen = true; - - let body = program.body; - for (let i = 0, l = body.length; i < l; i++) { - let current = body[i], - strip = this.accept(current); - - if (!strip) { - continue; - } - - let _isPrevWhitespace = isPrevWhitespace(body, i, isRoot), - _isNextWhitespace = isNextWhitespace(body, i, isRoot), - openStandalone = strip.openStandalone && _isPrevWhitespace, - closeStandalone = strip.closeStandalone && _isNextWhitespace, - inlineStandalone = strip.inlineStandalone && _isPrevWhitespace && _isNextWhitespace; - - if (strip.close) { - omitRight(body, i, true); - } - if (strip.open) { - omitLeft(body, i, true); - } - - if (doStandalone && inlineStandalone) { - omitRight(body, i); - - if (omitLeft(body, i)) { - // If we are on a standalone node, save the indent info for partials - if (current.type === 'PartialStatement') { - // Pull out the whitespace from the final line - current.indent = /([ \t]+$)/.exec(body[i - 1].original)[1]; - } - } - } - if (doStandalone && openStandalone) { - omitRight((current.program || current.inverse).body); - - // Strip out the previous content node if it's whitespace only - omitLeft(body, i); - } - if (doStandalone && closeStandalone) { - // Always strip the next node - omitRight(body, i); - - omitLeft((current.inverse || current.program).body); - } - } - - return program; -}; - -WhitespaceControl.prototype.BlockStatement = - WhitespaceControl.prototype.DecoratorBlock = - WhitespaceControl.prototype.PartialBlockStatement = - function (block) { - this.accept(block.program); - this.accept(block.inverse); - - // Find the inverse program that is involved with whitespace stripping. - let program = block.program || block.inverse, - inverse = block.program && block.inverse, - firstInverse = inverse, - lastInverse = inverse; - - if (inverse && inverse.chained) { - firstInverse = inverse.body[0].program; - - // Walk the inverse chain to find the last inverse that is actually in the chain. - while (lastInverse.chained) { - lastInverse = lastInverse.body[lastInverse.body.length - 1].program; - } - } - - let strip = { - open: block.openStrip.open, - close: block.closeStrip.close, - - // Determine the standalone candidacy. Basically flag our content as being possibly standalone - // so our parent can determine if we actually are standalone - openStandalone: isNextWhitespace(program.body), - closeStandalone: isPrevWhitespace((firstInverse || program).body), - }; - - if (block.openStrip.close) { - omitRight(program.body, null, true); - } - - if (inverse) { - let inverseStrip = block.inverseStrip; - - if (inverseStrip.open) { - omitLeft(program.body, null, true); - } - - if (inverseStrip.close) { - omitRight(firstInverse.body, null, true); - } - if (block.closeStrip.open) { - omitLeft(lastInverse.body, null, true); - } - - // Find standalone else statements - if ( - !this.options.ignoreStandalone && - isPrevWhitespace(program.body) && - isNextWhitespace(firstInverse.body) - ) { - omitLeft(program.body); - omitRight(firstInverse.body); - } - } else if (block.closeStrip.open) { - omitLeft(program.body, null, true); - } - - return strip; - }; - -WhitespaceControl.prototype.Decorator = WhitespaceControl.prototype.MustacheStatement = function ( - mustache -) { - return mustache.strip; -}; - -WhitespaceControl.prototype.PartialStatement = WhitespaceControl.prototype.CommentStatement = - function (node) { - /* istanbul ignore next */ - let strip = node.strip || {}; - return { - inlineStandalone: true, - open: strip.open, - close: strip.close, - }; - }; - -function isPrevWhitespace(body, i, isRoot) { - if (i === undefined) { - i = body.length; - } - - // Nodes that end with newlines are considered whitespace (but are special - // cased for strip operations) - let prev = body[i - 1], - sibling = body[i - 2]; - if (!prev) { - return isRoot; - } - - if (prev.type === 'ContentStatement') { - return (sibling || !isRoot ? /\r?\n\s*?$/ : /(^|\r?\n)\s*?$/).test(prev.original); - } -} -function isNextWhitespace(body, i, isRoot) { - if (i === undefined) { - i = -1; - } - - let next = body[i + 1], - sibling = body[i + 2]; - if (!next) { - return isRoot; - } - - if (next.type === 'ContentStatement') { - return (sibling || !isRoot ? /^\s*?\r?\n/ : /^\s*?(\r?\n|$)/).test(next.original); - } -} - -// Marks the node to the right of the position as omitted. -// I.e. {{foo}}' ' will mark the ' ' node as omitted. -// -// If i is undefined, then the first child will be marked as such. -// -// If multiple is truthy then all whitespace will be stripped out until non-whitespace -// content is met. -function omitRight(body, i, multiple) { - let current = body[i == null ? 0 : i + 1]; - if (!current || current.type !== 'ContentStatement' || (!multiple && current.rightStripped)) { - return; - } - - let original = current.value; - current.value = current.value.replace(multiple ? /^\s+/ : /^[ \t]*\r?\n?/, ''); - current.rightStripped = current.value !== original; -} - -// Marks the node to the left of the position as omitted. -// I.e. ' '{{foo}} will mark the ' ' node as omitted. -// -// If i is undefined then the last child will be marked as such. -// -// If multiple is truthy then all whitespace will be stripped out until non-whitespace -// content is met. -function omitLeft(body, i, multiple) { - let current = body[i == null ? body.length - 1 : i - 1]; - if (!current || current.type !== 'ContentStatement' || (!multiple && current.leftStripped)) { - return; - } - - // We omit the last node if it's whitespace only and not preceded by a non-content node. - let original = current.value; - current.value = current.value.replace(multiple ? /\s+$/ : /[ \t]+$/, ''); - current.leftStripped = current.value !== original; - return current.leftStripped; -} - -export default WhitespaceControl; diff --git a/packages/@handlebars/parser/package.json b/packages/@handlebars/parser/package.json deleted file mode 100644 index 4072441c423..00000000000 --- a/packages/@handlebars/parser/package.json +++ /dev/null @@ -1,39 +0,0 @@ -{ - "name": "@handlebars/parser", - "version": "2.2.2", - "description": "The parser for the Handlebars language", - "homepage": "https://github.com/handlebars-lang/handlebars-parser#readme", - "bugs": { - "url": "https://github.com/handlebars-lang/handlebars-parser/issues" - }, - "repository": { - "type": "git", - "url": "git+https://github.com/handlebars-lang/handlebars-parser.git" - }, - "license": "ISC", - "author": "", - "private": true, - "type": "module", - "exports": { - ".": { - "types": "./types/index.d.ts", - "default": "./lib/index.js" - } - }, - "main": "lib/index.js", - "module": "lib/index.js", - "types": "types/index.d.ts", - "scripts": { - "build:jison": "jison -m js src/handlebars.yy src/handlebars.l -o lib/parser.js", - "build:parser": "npm-run-all build:jison build:parser-suffix build:parser-ts-nocheck", - "build:parser-suffix": "combine-files lib/parser.js,src/parser-suffix.js lib/parser.js", - "build:parser-ts-nocheck": "node -e \"const fs=require('fs');const f='lib/parser.js';fs.writeFileSync(f,'// @ts-nocheck\\n'+fs.readFileSync(f,'utf8'))\"", - "test": "mocha --inline-diffs spec" - }, - "devDependencies": { - "combine-files": "^1.1.8", - "jison": "^0.4.18", - "mocha": "^11.0.0", - "npm-run-all2": "^8.0.0" - } -} diff --git a/packages/@handlebars/parser/spec/ast.js b/packages/@handlebars/parser/spec/ast.js deleted file mode 100644 index aeb32a47cc3..00000000000 --- a/packages/@handlebars/parser/spec/ast.js +++ /dev/null @@ -1,291 +0,0 @@ -import { parse, parseWithoutProcessing } from '../lib/index.js'; -import { equals } from './utils.js'; - -describe('ast', function () { - describe('whitespace control', function () { - describe('parse', function () { - it('mustache', function () { - let ast = parse(' {{~comment~}} '); - - equals(ast.body[0].value, ''); - equals(ast.body[2].value, ''); - }); - - it('block statements', function () { - let ast = parse(' {{# comment~}} \nfoo\n {{~/comment}}'); - - equals(ast.body[0].value, ''); - equals(ast.body[1].program.body[0].value, 'foo'); - }); - }); - - describe('parseWithoutProcessing', function () { - it('mustache', function () { - let ast = parseWithoutProcessing(' {{~comment~}} '); - - equals(ast.body[0].value, ' '); - equals(ast.body[2].value, ' '); - }); - - it('block statements', function () { - let ast = parseWithoutProcessing(' {{# comment~}} \nfoo\n {{~/comment}}'); - - equals(ast.body[0].value, ' '); - equals(ast.body[1].program.body[0].value, ' \nfoo\n '); - }); - }); - }); - - describe('node details', function () { - describe('paths', function () { - it('{{this}}', function () { - let path = parse('{{this}}').body[0].path; - equals(path.original, 'this'); - equals(path.head, undefined); - equals(path.tail.length, 0); - equals(path.parts.length, 0); - }); - - it('{{this.bar}}', function () { - let path = parse('{{this.bar}}').body[0].path; - equals(path.original, 'this.bar'); - equals(path.head, 'bar'); - equals(path.tail.length, 0); - equals(path.parts.length, 1); - equals(path.parts[0], 'bar'); - }); - - it('{{this.#bar}}', function () { - let path = parse('{{this.#bar}}').body[0].path; - equals(path.original, 'this.#bar'); - equals(path.head, '#bar'); - equals(path.tail.length, 0); - equals(path.parts.length, 1); - equals(path.parts[0], '#bar'); - }); - - it('{{foo.bar}}', function () { - let path = parse('{{foo.bar}}').body[0].path; - equals(path.original, 'foo.bar'); - equals(path.head, 'foo'); - equals(path.tail.length, 1); - equals(path.tail[0], 'bar'); - equals(path.parts.length, 2); - equals(path.parts[0], 'foo'); - equals(path.parts[1], 'bar'); - }); - - it('{{foo.#bar}}', function () { - let path = parse('{{foo.#bar}}').body[0].path; - equals(path.original, 'foo.#bar'); - equals(path.head, 'foo'); - equals(path.tail.length, 1); - equals(path.tail[0], '#bar'); - equals(path.parts.length, 2); - equals(path.parts[0], 'foo'); - equals(path.parts[1], '#bar'); - }); - }); - }); - - describe('standalone flags', function () { - describe('mustache', function () { - it('does not mark mustaches as standalone', function () { - let ast = parse(' {{comment}} '); - equals(!!ast.body[0].value, true); - equals(!!ast.body[2].value, true); - }); - }); - describe('blocks - parseWithoutProcessing', function () { - it('block mustaches', function () { - let ast = parseWithoutProcessing( - ' {{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} ' - ), - block = ast.body[1]; - - equals(ast.body[0].value, ' '); - - equals(block.program.body[0].value, ' \nfoo\n '); - equals(block.inverse.body[0].value, ' \n bar \n '); - - equals(ast.body[2].value, ' '); - }); - it('initial block mustaches', function () { - let ast = parseWithoutProcessing('{{# comment}} \nfoo\n {{/comment}}'), - block = ast.body[0]; - - equals(block.program.body[0].value, ' \nfoo\n '); - }); - it('mustaches with children', function () { - let ast = parseWithoutProcessing('{{# comment}} \n{{foo}}\n {{/comment}}'), - block = ast.body[0]; - - equals(block.program.body[0].value, ' \n'); - equals(block.program.body[1].path.original, 'foo'); - equals(block.program.body[2].value, '\n '); - }); - it('nested block mustaches', function () { - let ast = parseWithoutProcessing( - '{{#foo}} \n{{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} \n{{/foo}}' - ), - body = ast.body[0].program.body, - block = body[1]; - - equals(body[0].value, ' \n'); - - equals(block.program.body[0].value, ' \nfoo\n '); - equals(block.inverse.body[0].value, ' \n bar \n '); - }); - it('column 0 block mustaches', function () { - let ast = parseWithoutProcessing( - 'test\n{{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} ' - ), - block = ast.body[1]; - - equals(ast.body[0].omit, undefined); - - equals(block.program.body[0].value, ' \nfoo\n '); - equals(block.inverse.body[0].value, ' \n bar \n '); - - equals(ast.body[2].value, ' '); - }); - }); - describe('blocks', function () { - it('marks block mustaches as standalone', function () { - let ast = parse(' {{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} '), - block = ast.body[1]; - - equals(ast.body[0].value, ''); - - equals(block.program.body[0].value, 'foo\n'); - equals(block.inverse.body[0].value, ' bar \n'); - - equals(ast.body[2].value, ''); - }); - it('marks initial block mustaches as standalone', function () { - let ast = parse('{{# comment}} \nfoo\n {{/comment}}'), - block = ast.body[0]; - - equals(block.program.body[0].value, 'foo\n'); - }); - it('marks mustaches with children as standalone', function () { - let ast = parse('{{# comment}} \n{{foo}}\n {{/comment}}'), - block = ast.body[0]; - - equals(block.program.body[0].value, ''); - equals(block.program.body[1].path.original, 'foo'); - equals(block.program.body[2].value, '\n'); - }); - it('marks nested block mustaches as standalone', function () { - let ast = parse( - '{{#foo}} \n{{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} \n{{/foo}}' - ), - body = ast.body[0].program.body, - block = body[1]; - - equals(body[0].value, ''); - - equals(block.program.body[0].value, 'foo\n'); - equals(block.inverse.body[0].value, ' bar \n'); - - equals(body[0].value, ''); - }); - it('does not mark nested block mustaches as standalone', function () { - let ast = parse( - '{{#foo}} {{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} {{/foo}}' - ), - body = ast.body[0].program.body, - block = body[1]; - - equals(body[0].omit, undefined); - - equals(block.program.body[0].value, ' \nfoo\n'); - equals(block.inverse.body[0].value, ' bar \n '); - - equals(body[0].omit, undefined); - }); - it('does not mark nested initial block mustaches as standalone', function () { - let ast = parse('{{#foo}}{{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}}{{/foo}}'), - body = ast.body[0].program.body, - block = body[0]; - - equals(block.program.body[0].value, ' \nfoo\n'); - equals(block.inverse.body[0].value, ' bar \n '); - - equals(body[0].omit, undefined); - }); - - it('marks column 0 block mustaches as standalone', function () { - let ast = parse('test\n{{# comment}} \nfoo\n {{else}} \n bar \n {{/comment}} '), - block = ast.body[1]; - - equals(ast.body[0].omit, undefined); - - equals(block.program.body[0].value, 'foo\n'); - equals(block.inverse.body[0].value, ' bar \n'); - - equals(ast.body[2].value, ''); - }); - }); - describe('partials - parseWithoutProcessing', function () { - it('simple partial', function () { - let ast = parseWithoutProcessing('{{> partial }} '); - equals(ast.body[1].value, ' '); - }); - it('indented partial', function () { - let ast = parseWithoutProcessing(' {{> partial }} '); - equals(ast.body[0].value, ' '); - equals(ast.body[1].indent, ''); - equals(ast.body[2].value, ' '); - }); - }); - describe('partials', function () { - it('marks partial as standalone', function () { - let ast = parse('{{> partial }} '); - equals(ast.body[1].value, ''); - }); - it('marks indented partial as standalone', function () { - let ast = parse(' {{> partial }} '); - equals(ast.body[0].value, ''); - equals(ast.body[1].indent, ' '); - equals(ast.body[2].value, ''); - }); - it('marks those around content as not standalone', function () { - let ast = parse('a{{> partial }}'); - equals(ast.body[0].omit, undefined); - - ast = parse('{{> partial }}a'); - equals(ast.body[1].omit, undefined); - }); - }); - describe('comments - parseWithoutProcessing', function () { - it('simple comment', function () { - let ast = parseWithoutProcessing('{{! comment }} '); - equals(ast.body[1].value, ' '); - }); - it('indented comment', function () { - let ast = parseWithoutProcessing(' {{! comment }} '); - equals(ast.body[0].value, ' '); - equals(ast.body[2].value, ' '); - }); - }); - describe('comments', function () { - it('marks comment as standalone', function () { - let ast = parse('{{! comment }} '); - equals(ast.body[1].value, ''); - }); - it('marks indented comment as standalone', function () { - let ast = parse(' {{! comment }} '); - equals(ast.body[0].value, ''); - equals(ast.body[2].value, ''); - }); - it('marks those around content as not standalone', function () { - let ast = parse('a{{! comment }}'); - equals(ast.body[0].omit, undefined); - - ast = parse('{{! comment }}a'); - equals(ast.body[1].omit, undefined); - }); - }); - }); -}); diff --git a/packages/@handlebars/parser/spec/parser.js b/packages/@handlebars/parser/spec/parser.js deleted file mode 100644 index 970b2350a4e..00000000000 --- a/packages/@handlebars/parser/spec/parser.js +++ /dev/null @@ -1,500 +0,0 @@ -import { parse, print } from '../lib/index.js'; -import { equals, equalsAst, shouldThrow } from './utils.js'; - -describe('parser', function () { - function astFor(template) { - let ast = parse(template); - return print(ast); - } - - it('parses simple mustaches', function () { - equalsAst('{{123}}', '{{ n%123 }}'); - equalsAst('{{"foo"}}', '{{ "foo" }}'); - equalsAst('{{false}}', '{{ b%false }}'); - equalsAst('{{true}}', '{{ b%true }}'); - equalsAst('{{foo}}', '{{ p%foo }}'); - equalsAst('{{foo?}}', '{{ p%foo? }}'); - equalsAst('{{foo_}}', '{{ p%foo_ }}'); - equalsAst('{{foo-}}', '{{ p%foo- }}'); - equalsAst('{{foo:}}', '{{ p%foo: }}'); - }); - - it('parses simple mustaches with data', function () { - equalsAst('{{@foo}}', '{{ p%@foo }}'); - }); - - it('parses simple mustaches with data paths', function () { - equalsAst('{{@../foo}}', '{{ p%@foo }}'); - }); - - it('parses mustaches with paths', function () { - equalsAst('{{foo/bar}}', '{{ p%foo/bar }}'); - equalsAst('{{foo.bar}}', '{{ p%foo/bar }}'); - equalsAst('{{foo.#bar}}', '{{ p%foo/#bar }}'); - equalsAst('{{@foo.#bar}}', '{{ p%@foo/#bar }}'); - - equalsAst('{{this/foo}}', '{{ p%foo }}'); - equalsAst('{{this.foo}}', '{{ p%this.foo }}'); - equalsAst('{{this.#foo}}', '{{ p%this.#foo }}'); - }); - - it('parses mustaches with - in a path', function () { - equalsAst('{{foo-bar}}', '{{ p%foo-bar }}'); - }); - - it('parses mustaches with escaped [] in a path', function () { - equalsAst('{{[foo[\\]]}}', '{{ p%foo[] }}'); - }); - - it('parses escaped \\\\ in path', function () { - equalsAst('{{[foo\\\\]}}', '{{ p%foo\\ }}'); - }); - - it('parses hash literals', function () { - equalsAst('{{(foo=bar)}}', '{{ Hash{foo=p%bar} }}'); - equalsAst('{{(foo=bar)}}', '{{ p%@hello }}', { - options: { - syntax: { - hash: (hash, loc, { yy }) => { - return yy.preparePath(true, false, [{ part: yy.id('hello'), original: 'hello' }], loc); - }, - }, - }, - }); - }); - - it('parses array literals', function () { - equalsAst('{{[foo bar]}}', '{{ Array[p%foo, p%bar] }}', { - options: { syntax: { square: 'node' } }, - }); - - equalsAst('{{[foo bar].baz}}', '{{ p%[Array[p%foo, p%bar]]/baz }}', { - options: { syntax: { square: 'node' } }, - }); - }); - - it('parses mustaches that are hash literals', function () { - equalsAst('{{foo=bar}}', '{{ Hash{foo=p%bar} }}'); - equalsAst('{{foo=bar}}', `{{ "HASH{foo=p%bar}" }}`, { - options: { - syntax: { - hash: (hash, loc) => { - return { - type: 'StringLiteral', - original: print(hash), - value: print(hash), - loc, - }; - }, - }, - }, - }); - }); - - it('parses mustaches with parameters', function () { - equalsAst('{{foo bar}}', '{{ p%foo [p%bar] }}'); - equalsAst('{{this.foo bar}}', '{{ p%this.foo [p%bar] }}'); - equalsAst('{{this.foo this.bar}}', '{{ p%this.foo [p%this.bar] }}'); - equalsAst('{{this.#foo this.#bar}}', '{{ p%this.#foo [p%this.#bar] }}'); - equalsAst('{{foo.#bar foo.#baz}}', '{{ p%foo/#bar [p%foo/#baz] }}'); - equalsAst('{{@foo.#bar @foo.#baz}}', '{{ p%@foo/#bar [p%@foo/#baz] }}'); - }); - - it('parses mustaches with string parameters', function () { - equalsAst('{{foo bar "baz" }}', '{{ p%foo [p%bar, "baz"] }}'); - equalsAst('{{this.foo bar "baz" }}', '{{ p%this.foo [p%bar, "baz"] }}'); - equalsAst('{{this.#foo bar "baz" }}', '{{ p%this.#foo [p%bar, "baz"] }}'); - equalsAst('{{@item.#foo bar "baz" }}', '{{ p%@item/#foo [p%bar, "baz"] }}'); - }); - - it('parses mustaches with NUMBER parameters', function () { - equalsAst('{{foo 1}}', '{{ p%foo [n%1] }}'); - equalsAst('{{this.foo 1}}', '{{ p%this.foo [n%1] }}'); - equalsAst('{{this.#foo 1}}', '{{ p%this.#foo [n%1] }}'); - }); - - it('parses mustaches with BOOLEAN parameters', function () { - equalsAst('{{foo true}}', '{{ p%foo [b%true] }}'); - equalsAst('{{foo false}}', '{{ p%foo [b%false] }}'); - }); - - it('parses mustaches with undefined and null paths', function () { - equalsAst('{{undefined}}', '{{ UNDEFINED }}'); - equalsAst('{{null}}', '{{ NULL }}'); - }); - - it('parses mustaches with undefined and null parameters', function () { - equalsAst('{{foo undefined null}}', '{{ p%foo [UNDEFINED, NULL] }}'); - }); - - it('parses mustaches with DATA parameters', function () { - equalsAst('{{foo @bar}}', '{{ p%foo [p%@bar] }}'); - }); - - it('parses mustaches with hash arguments', function () { - equalsAst('{{foo bar=baz}}', '{{ p%foo HASH{bar=p%baz} }}'); - equalsAst('{{foo bar=1}}', '{{ p%foo HASH{bar=n%1} }}'); - equalsAst('{{foo bar=true}}', '{{ p%foo HASH{bar=b%true} }}'); - equalsAst('{{foo bar=false}}', '{{ p%foo HASH{bar=b%false} }}'); - equalsAst('{{foo bar=@baz}}', '{{ p%foo HASH{bar=p%@baz} }}'); - - equalsAst('{{foo bar=baz bat=bam}}', '{{ p%foo HASH{bar=p%baz bat=p%bam} }}'); - equalsAst('{{foo bar=baz bat="bam"}}', '{{ p%foo HASH{bar=p%baz bat="bam"} }}'); - - equalsAst("{{foo bat='bam'}}", '{{ p%foo HASH{bat="bam"} }}'); - - equalsAst('{{foo omg bar=baz bat="bam"}}', '{{ p%foo [p%omg] HASH{bar=p%baz bat="bam"} }}'); - equalsAst( - '{{foo omg bar=baz bat="bam" baz=1}}', - '{{ p%foo [p%omg] HASH{bar=p%baz bat="bam" baz=n%1} }}' - ); - equalsAst( - '{{foo omg bar=baz bat="bam" baz=true}}', - '{{ p%foo [p%omg] HASH{bar=p%baz bat="bam" baz=b%true} }}' - ); - equalsAst( - '{{foo omg bar=baz bat="bam" baz=false}}', - '{{ p%foo [p%omg] HASH{bar=p%baz bat="bam" baz=b%false} }}' - ); - }); - - it('parses contents followed by a mustache', function () { - equalsAst('foo bar {{baz}}', "CONTENT[ 'foo bar ' ]\n{{ p%baz }}"); - }); - - it('parses a partial', function () { - equalsAst('{{> foo }}', '{{> PARTIAL:foo }}'); - equalsAst('{{> "foo" }}', '{{> PARTIAL:foo }}'); - equalsAst('{{> 1 }}', '{{> PARTIAL:1 }}'); - }); - - it('parses a partial with context', function () { - equalsAst('{{> foo bar}}', '{{> PARTIAL:foo p%bar }}'); - }); - - it('parses a partial with hash', function () { - equalsAst('{{> foo bar=bat}}', '{{> PARTIAL:foo HASH{bar=p%bat} }}'); - }); - - it('parses a partial with context and hash', function () { - equalsAst('{{> foo bar bat=baz}}', '{{> PARTIAL:foo p%bar HASH{bat=p%baz} }}'); - }); - - it('parses a partial with a complex name', function () { - equalsAst('{{> shared/partial?.bar}}', '{{> PARTIAL:shared/partial?.bar }}'); - }); - - it('parsers partial blocks', function () { - equalsAst('{{#> foo}}bar{{/foo}}', "{{> PARTIAL BLOCK:foo PROGRAM:\n CONTENT[ 'bar' ]\n }}"); - }); - it('should handle parser block mismatch', function () { - shouldThrow( - function () { - astFor('{{#> goodbyes}}{{/hellos}}'); - }, - Error, - /goodbyes doesn't match hellos/ - ); - }); - it('parsers partial blocks with arguments', function () { - equalsAst( - '{{#> foo context hash=value}}bar{{/foo}}', - "{{> PARTIAL BLOCK:foo p%context HASH{hash=p%value} PROGRAM:\n CONTENT[ 'bar' ]\n }}" - ); - }); - - it('parses a comment', function () { - equalsAst('{{! this is a comment }}', "{{! ' this is a comment ' }}"); - }); - - it('parses a multi-line comment', function () { - equalsAst('{{!\nthis is a multi-line comment\n}}', "{{! '\nthis is a multi-line comment\n' }}"); - }); - - it('parses an inverse section', function () { - equalsAst( - '{{#foo}} bar {{^}} baz {{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n CONTENT[ ' bar ' ]\n {{^}}\n CONTENT[ ' baz ' ]" - ); - }); - - it('parses an inverse (else-style) section', function () { - equalsAst( - '{{#foo}} bar {{else}} baz {{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n CONTENT[ ' bar ' ]\n {{^}}\n CONTENT[ ' baz ' ]" - ); - }); - - it('parses multiple inverse sections', function () { - equalsAst( - '{{#foo}} bar {{else if bar}}{{else}} baz {{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n CONTENT[ ' bar ' ]\n {{^}}\n BLOCK:\n p%if [p%bar]\n PROGRAM:\n {{^}}\n CONTENT[ ' baz ' ]" - ); - }); - - it('parses empty blocks', function () { - equalsAst('{{#foo}}{{/foo}}', 'BLOCK:\n p%foo\n PROGRAM:'); - }); - - it('parses empty blocks with empty inverse section', function () { - equalsAst('{{#foo}}{{^}}{{/foo}}', 'BLOCK:\n p%foo\n PROGRAM:\n {{^}}'); - }); - - it('parses empty blocks with empty inverse (else-style) section', function () { - equalsAst('{{#foo}}{{else}}{{/foo}}', 'BLOCK:\n p%foo\n PROGRAM:\n {{^}}'); - }); - - it('parses non-empty blocks with empty inverse section', function () { - equalsAst( - '{{#foo}} bar {{^}}{{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n CONTENT[ ' bar ' ]\n {{^}}" - ); - }); - - it('parses non-empty blocks with empty inverse (else-style) section', function () { - equalsAst( - '{{#foo}} bar {{else}}{{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n CONTENT[ ' bar ' ]\n {{^}}" - ); - }); - - it('parses empty blocks with non-empty inverse section', function () { - equalsAst( - '{{#foo}}{{^}} bar {{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n {{^}}\n CONTENT[ ' bar ' ]" - ); - }); - - it('parses empty blocks with non-empty inverse (else-style) section', function () { - equalsAst( - '{{#foo}}{{else}} bar {{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n {{^}}\n CONTENT[ ' bar ' ]" - ); - }); - - it('parses a standalone inverse section', function () { - equalsAst('{{^foo}}bar{{/foo}}', "BLOCK:\n p%foo\n {{^}}\n CONTENT[ 'bar' ]"); - }); - - it('throws on old inverse section', function () { - shouldThrow(function () { - astFor('{{else foo}}bar{{/foo}}'); - }, Error); - }); - - it('parses block with block params', function () { - equalsAst( - '{{#foo as |bar baz|}}content{{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n BLOCK PARAMS: [ bar baz ]\n CONTENT[ 'content' ]" - ); - }); - - it('parses mustaches with sub-expressions as the callable', function () { - equalsAst('{{(my-helper foo)}}', '{{ (p%my-helper [p%foo]) }}'); - }); - - it('parses mustaches with sub-expressions as the callable (with args)', function () { - equalsAst('{{(my-helper foo) bar}}', '{{ (p%my-helper [p%foo]) [p%bar] }}'); - }); - - it('parses sub-expressions with a sub-expression as the callable', function () { - equalsAst('{{((my-helper foo))}}', '{{ ((p%my-helper [p%foo])) }}'); - }); - - it('parses sub-expressions with a sub-expression as the callable (with args)', function () { - equalsAst('{{((my-helper foo) bar)}}', '{{ ((p%my-helper [p%foo]) [p%bar]) }}'); - }); - - it('parses arguments with a sub-expression as the callable (with args)', function () { - equalsAst( - '{{my-helper ((foo) bar) baz=((foo bar))}}', - '{{ p%my-helper [((p%foo) [p%bar])] HASH{baz=((p%foo [p%bar]))} }}' - ); - }); - - it('parses paths with sub-expressions as the root', function () { - equalsAst('{{(my-helper foo).bar}}', '{{ p%[(p%my-helper [p%foo])]/bar }}'); - }); - - it('parses paths with sub-expressions as the root as a callable', function () { - equalsAst('{{((my-helper foo).bar baz)}}', '{{ (p%[(p%my-helper [p%foo])]/bar [p%baz]) }}'); - }); - - it('parses paths with sub-expressions as the root as an argument', function () { - equalsAst('{{(foo (my-helper bar).baz)}}', '{{ (p%foo [p%[(p%my-helper [p%bar])]/baz]) }}'); - }); - - it('parses paths with sub-expressions as the root as a named argument', function () { - equalsAst( - '{{(foo bar=(my-helper baz).qux)}}', - '{{ (p%foo HASH{bar=p%[(p%my-helper [p%baz])]/qux}) }}' - ); - }); - - it('parses inverse block with block params', function () { - equalsAst( - '{{^foo as |bar baz|}}content{{/foo}}', - "BLOCK:\n p%foo\n {{^}}\n BLOCK PARAMS: [ bar baz ]\n CONTENT[ 'content' ]" - ); - }); - it('parses chained inverse block with block params', function () { - equalsAst( - '{{#foo}}{{else foo as |bar baz|}}content{{/foo}}', - "BLOCK:\n p%foo\n PROGRAM:\n {{^}}\n BLOCK:\n p%foo\n PROGRAM:\n BLOCK PARAMS: [ bar baz ]\n CONTENT[ 'content' ]" - ); - }); - it("raises if there's a Parse error", function () { - shouldThrow( - function () { - astFor('foo{{^}}bar'); - }, - Error, - /Parse error on line 1/ - ); - shouldThrow( - function () { - astFor('{{foo}'); - }, - Error, - /Parse error on line 1/ - ); - shouldThrow( - function () { - astFor('{{foo &}}'); - }, - Error, - /Parse error on line 1/ - ); - shouldThrow( - function () { - astFor('{{#goodbyes}}{{/hellos}}'); - }, - Error, - /goodbyes doesn't match hellos/ - ); - - shouldThrow( - function () { - astFor('{{{{goodbyes}}}} {{{{/hellos}}}}'); - }, - Error, - /goodbyes doesn't match hellos/ - ); - }); - - it('should handle invalid paths', function () { - shouldThrow( - function () { - astFor('{{foo/../bar}}'); - }, - Error, - /Invalid path: foo\/\.\. - 1:2/ - ); - shouldThrow( - function () { - astFor('{{foo/./bar}}'); - }, - Error, - /Invalid path: foo\/\. - 1:2/ - ); - shouldThrow( - function () { - astFor('{{foo/this/bar}}'); - }, - Error, - /Invalid path: foo\/this - 1:2/ - ); - }); - - it('knows how to report the correct line number in errors', function () { - shouldThrow( - function () { - astFor('hello\nmy\n{{foo}'); - }, - Error, - /Parse error on line 3/ - ); - shouldThrow( - function () { - astFor('hello\n\nmy\n\n{{foo}'); - }, - Error, - /Parse error on line 5/ - ); - }); - - it('knows how to report the correct line number in errors when the first character is a newline', function () { - shouldThrow( - function () { - astFor('\n\nhello\n\nmy\n\n{{foo}'); - }, - Error, - /Parse error on line 7/ - ); - }); - - describe('externally compiled AST', function () { - it('can pass through an already-compiled AST', function () { - equals( - astFor({ - type: 'Program', - body: [{ type: 'ContentStatement', value: 'Hello' }], - }), - "CONTENT[ 'Hello' ]\n" - ); - }); - }); - - describe('directives', function () { - it('should parse block directives', function () { - equalsAst('{{#* foo}}{{/foo}}', 'DIRECTIVE BLOCK:\n p%foo\n PROGRAM:'); - }); - it('should parse directives', function () { - equalsAst('{{* foo}}', '{{ DIRECTIVE p%foo }}'); - }); - it('should fail if directives have inverse', function () { - shouldThrow( - function () { - astFor('{{#* foo}}{{^}}{{/foo}}'); - }, - Error, - /Unexpected inverse/ - ); - }); - }); - - it('GH1024 - should track program location properly', function () { - let p = parse( - '\n' + - ' {{#if foo}}\n' + - ' {{bar}}\n' + - ' {{else}} {{baz}}\n' + - '\n' + - ' {{/if}}\n' + - ' ' - ); - - // We really need a deep equals but for now this should be stable... - equals( - JSON.stringify(p.loc), - JSON.stringify({ - start: { line: 1, column: 0 }, - end: { line: 7, column: 4 }, - }) - ); - equals( - JSON.stringify(p.body[1].program.loc), - JSON.stringify({ - start: { line: 2, column: 13 }, - end: { line: 4, column: 7 }, - }) - ); - equals( - JSON.stringify(p.body[1].inverse.loc), - JSON.stringify({ - start: { line: 4, column: 15 }, - end: { line: 6, column: 5 }, - }) - ); - }); -}); diff --git a/packages/@handlebars/parser/spec/utils.js b/packages/@handlebars/parser/spec/utils.js deleted file mode 100644 index d3739bca271..00000000000 --- a/packages/@handlebars/parser/spec/utils.js +++ /dev/null @@ -1,107 +0,0 @@ -import { parse, print } from '../lib/index.js'; - -let AssertError; -if (Error.captureStackTrace) { - AssertError = function AssertError(message, caller) { - Error.prototype.constructor.call(this, message); - this.message = message; - - if (Error.captureStackTrace) { - Error.captureStackTrace(this, caller || AssertError); - } - }; - - AssertError.prototype = new Error(); -} else { - AssertError = Error; -} - -/** - * @todo Use chai's expect-style API instead (`expect(actualValue).to.equal(expectedValue)`) - * @see https://www.chaijs.com/api/bdd/ - */ -export function equals(actual, expected, msg) { - if (actual !== expected) { - const error = new AssertError( - `\n Actual: ${actual} Expected: ${expected}` + (msg ? `\n${msg}` : ''), - equals - ); - error.expected = expected; - error.actual = actual; - throw error; - } -} - -export function equalsAst(source, expected, options) { - const msg = typeof options === 'string' ? options : options?.msg; - const parserOptions = typeof options === 'string' ? undefined : options?.options; - const ast = astFor(source, parserOptions); - const padding = ` `.repeat(8); - - if (ast !== `${expected}\n`) { - let sourceMsg = `${padding}Source: ${source}`; - if (parserOptions) { - let formattedOptions = printOptions(parserOptions).split('\n').join(`\n${padding}`); - - sourceMsg += `\n${padding}Options: ${formattedOptions}`; - } - const error = new AssertError(`\n${sourceMsg}${msg ? `\n${msg}` : ''}\n`, equalsAst); - - error.expected = expected; - error.actual = ast; - throw error; - } -} - -function printOptions(options) { - if (!options) { - return ''; - } - - let outOptions = {}; - - if (options.srcName) { - outOptions.srcName = options.srcName; - } - if (options.syntax) { - outOptions.syntax = {}; - - if (options.syntax.hash) { - outOptions.syntax.hash = `{function ${options.syntax.hash.name ?? 'anonymous'}}`; - } - if (options.syntax.square) { - outOptions.syntax.square = `{function ${options.syntax.square.name ?? 'anonymous'}}`; - } - } - - return JSON.stringify(outOptions, null, 2); -} - -/** - * @todo Use chai's expect-style API instead (`expect(actualValue).to.equal(expectedValue)`) - * @see https://www.chaijs.com/api/bdd/#method_throw - */ -export function shouldThrow(callback, type, msg) { - let failed; - try { - callback(); - failed = true; - } catch (caught) { - if (type && !(caught instanceof type)) { - throw new AssertError('Type failure: ' + caught); - } - if (msg && !(msg.test ? msg.test(caught.message) : msg === caught.message)) { - throw new AssertError( - 'Throw mismatch: Expected ' + caught.message + ' to match ' + msg + '\n\n' + caught.stack, - shouldThrow - ); - } - } - if (failed) { - throw new AssertError('It failed to throw', shouldThrow); - } -} -function astFor(template, options = {}) { - let ast = parse(template, options); - return print(ast); -} diff --git a/packages/@handlebars/parser/spec/visitor.js b/packages/@handlebars/parser/spec/visitor.js deleted file mode 100644 index d72ad3e0edc..00000000000 --- a/packages/@handlebars/parser/spec/visitor.js +++ /dev/null @@ -1,155 +0,0 @@ -import { Visitor, parse, print, Exception } from '../lib/index.js'; -import { equals, shouldThrow } from './utils.js'; - -describe('Visitor', function () { - it('should provide coverage', function () { - // Simply run the thing and make sure it does not fail and that all of the - // stub methods are executed - let visitor = new Visitor(); - visitor.accept( - parse( - '{{foo}}{{#foo (bar 1 "1" true undefined null) foo=@data}}{{!comment}}{{> bar }} {{/foo}}' - ) - ); - visitor.accept(parse('{{#> bar }} {{/bar}}')); - visitor.accept(parse('{{#* bar }} {{/bar}}')); - visitor.accept(parse('{{* bar }}')); - }); - - it('should traverse to stubs', function () { - let visitor = new Visitor(); - - visitor.StringLiteral = function (string) { - equals(string.value, '2'); - }; - visitor.NumberLiteral = function (number) { - equals(number.value, 1); - }; - visitor.BooleanLiteral = function (bool) { - equals(bool.value, true); - - equals(this.parents.length, 3); - equals(this.parents[0].type, 'SubExpression'); - equals(this.parents[1].type, 'BlockStatement'); - equals(this.parents[2].type, 'Program'); - }; - visitor.PathExpression = function (id) { - equals(/(foo\.)?bar$/.test(id.original), true); - }; - visitor.ContentStatement = function (content) { - equals(content.value, ' '); - }; - visitor.CommentStatement = function (comment) { - equals(comment.value, 'comment'); - }; - - visitor.accept( - parse('{{#foo.bar (foo.bar 1 "2" true) foo=@foo.bar}}{{!comment}}{{> bar }} {{/foo.bar}}') - ); - }); - - describe('mutating', function () { - describe('fields', function () { - it('should replace value', function () { - let visitor = new Visitor(); - - visitor.mutating = true; - visitor.StringLiteral = function (string) { - return { type: 'NumberLiteral', value: 42, loc: string.loc }; - }; - - let ast = parse('{{foo foo="foo"}}'); - visitor.accept(ast); - equals(print(ast), '{{ p%foo HASH{foo=n%42} }}\n'); - }); - it('should treat undefined resonse as identity', function () { - let visitor = new Visitor(); - visitor.mutating = true; - - let ast = parse('{{foo foo=42}}'); - visitor.accept(ast); - equals(print(ast), '{{ p%foo HASH{foo=n%42} }}\n'); - }); - it('should remove false responses', function () { - let visitor = new Visitor(); - - visitor.mutating = true; - visitor.Hash = function () { - return false; - }; - - let ast = parse('{{foo foo=42}}'); - visitor.accept(ast); - equals(print(ast), '{{ p%foo }}\n'); - }); - it('should throw when removing required values', function () { - shouldThrow( - function () { - let visitor = new Visitor(); - - visitor.mutating = true; - visitor.PathExpression = function () { - return false; - }; - - let ast = parse('{{foo 42}}'); - visitor.accept(ast); - }, - Exception, - 'MustacheStatement requires path' - ); - }); - it('should throw when returning non-node responses', function () { - shouldThrow( - function () { - let visitor = new Visitor(); - - visitor.mutating = true; - visitor.PathExpression = function () { - return {}; - }; - - let ast = parse('{{foo 42}}'); - visitor.accept(ast); - }, - Exception, - 'Unexpected node type "undefined" found when accepting path on MustacheStatement' - ); - }); - }); - describe('arrays', function () { - it('should replace value', function () { - let visitor = new Visitor(); - - visitor.mutating = true; - visitor.StringLiteral = function (string) { - return { type: 'NumberLiteral', value: 42, loc: string.locInfo }; - }; - - let ast = parse('{{foo "foo"}}'); - visitor.accept(ast); - equals(print(ast), '{{ p%foo [n%42] }}\n'); - }); - it('should treat undefined resonse as identity', function () { - let visitor = new Visitor(); - visitor.mutating = true; - - let ast = parse('{{foo 42}}'); - visitor.accept(ast); - equals(print(ast), '{{ p%foo [n%42] }}\n'); - }); - it('should remove false responses', function () { - let visitor = new Visitor(); - - visitor.mutating = true; - visitor.NumberLiteral = function () { - return false; - }; - - let ast = parse('{{foo 42}}'); - visitor.accept(ast); - equals(print(ast), '{{ p%foo }}\n'); - }); - }); - }); -}); diff --git a/packages/@handlebars/parser/tsconfig.json b/packages/@handlebars/parser/tsconfig.json deleted file mode 100644 index eb6cd98e79d..00000000000 --- a/packages/@handlebars/parser/tsconfig.json +++ /dev/null @@ -1,24 +0,0 @@ -{ - "compilerOptions": { - // Compilation Configuration - "target": "es2017", - "inlineSources": true, - "inlineSourceMap": true, - "outDir": "dist", - "rootDir": "lib", - "esModuleInterop": true, - "moduleResolution": "bundler", - "verbatimModuleSyntax": true, - // Enhance Strictness - "strict": true, - "skipLibCheck": true, - "suppressImplicitAnyIndexErrors": false, - "noUnusedLocals": true, - "noUnusedParameters": true, - "noImplicitReturns": true, - "newLine": "LF", - "allowJs": true - }, - "include": ["lib/**/*.js", "lib/**/*.d.ts"], - "exclude": ["lib/parser.js", "dist", "node_modules", ".vscode"] -} diff --git a/packages/@handlebars/parser/types/ast.d.ts b/packages/@handlebars/parser/types/ast.d.ts deleted file mode 100644 index b9bb2b6c3e7..00000000000 --- a/packages/@handlebars/parser/types/ast.d.ts +++ /dev/null @@ -1,146 +0,0 @@ -export interface Node { - type: string; - loc: SourceLocation; -} - -export interface SourceLocation { - source: string; - start: Position; - end: Position; -} - -export interface Position { - line: number; - column: number; -} - -export interface Program extends Node { - body: Statement[]; - blockParams: string[]; -} - -export interface Statement extends Node {} - -export interface MustacheStatement extends Statement { - type: 'MustacheStatement'; - path: SubExpression | PathExpression | Literal; - params: Expression[]; - hash: Hash; - escaped: boolean; - strip: StripFlags; -} - -export interface Decorator extends MustacheStatement { } - -export interface BlockStatement extends Statement { - type: 'BlockStatement'; - path: PathExpression; - params: Expression[]; - hash: Hash; - program: Program; - inverse: Program; - openStrip: StripFlags; - inverseStrip: StripFlags; - closeStrip: StripFlags; -} - -export interface DecoratorBlock extends BlockStatement { } - -export interface PartialStatement extends Statement { - type: 'PartialStatement'; - name: PathExpression | SubExpression; - params: Expression[]; - hash: Hash; - indent: string; - strip: StripFlags; -} - -export interface PartialBlockStatement extends Statement { - type: 'PartialBlockStatement'; - name: PathExpression | SubExpression; - params: Expression[]; - hash: Hash; - program: Program; - openStrip: StripFlags; - closeStrip: StripFlags; -} - -export interface ContentStatement extends Statement { - type: 'ContentStatement'; - value: string; - original: StripFlags; -} - -export interface CommentStatement extends Statement { - type: 'CommentStatement'; - value: string; - strip: StripFlags; -} - -export interface Expression extends Node {} - -export interface SubExpression extends Expression { - type: 'SubExpression'; - path: SubExpression | PathExpression; - params: Expression[]; - hash: Hash; -} - -export interface PathExpression extends Expression { - type: 'PathExpression'; - data: boolean; - depth: number; - parts: (string | SubExpression)[]; - head: SubExpression | string; - tail: string[]; - original: string; -} - -export interface Literal extends Expression {} -export interface StringLiteral extends Literal { - type: 'StringLiteral'; - value: string; - original: string; -} - -export interface BooleanLiteral extends Literal { - type: 'BooleanLiteral'; - value: boolean; - original: boolean; -} - -export interface NumberLiteral extends Literal { - type: 'NumberLiteral'; - value: number; - original: number; -} - -export interface UndefinedLiteral extends Literal { - type: 'UndefinedLiteral'; -} - -export interface NullLiteral extends Literal { - type: 'NullLiteral'; -} - -export interface Hash extends Node { - type: 'Hash'; - pairs: HashPair[]; -} - -export interface HashPair extends Node { - type: 'HashPair'; - key: string; - value: Expression; -} - -export interface StripFlags { - open: boolean; - close: boolean; -} - -export interface helpers { - helperExpression(node: Node): boolean; - scopeId(path: PathExpression): boolean; - simpleId(path: PathExpression): boolean; -} diff --git a/packages/@handlebars/parser/types/index.d.ts b/packages/@handlebars/parser/types/index.d.ts deleted file mode 100644 index 88ed676ddcc..00000000000 --- a/packages/@handlebars/parser/types/index.d.ts +++ /dev/null @@ -1,11 +0,0 @@ -import * as AST from './ast'; - -export { AST }; - -export interface ParseOptions { - srcName?: string; - ignoreStandalone?: boolean; -} - -export function parse(input: string, options?: ParseOptions): AST.Program; -export function parseWithoutProcessing(input: string, options?: ParseOptions): AST.Program; diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml index 6ce161c9c14..bbb4ee58202 100644 --- a/pnpm-lock.yaml +++ b/pnpm-lock.yaml @@ -2150,9 +2150,6 @@ importers: '@glimmer/wire-format': specifier: workspace:* version: link:../wire-format - '@handlebars/parser': - specifier: workspace:* - version: link:../../@handlebars/parser simple-html-tokenizer: specifier: ^0.5.11 version: 0.5.11 @@ -2325,21 +2322,6 @@ importers: specifier: ^5.7.3 version: 5.9.3 - packages/@handlebars/parser: - devDependencies: - combine-files: - specifier: ^1.1.8 - version: 1.1.8 - jison: - specifier: ^0.4.18 - version: 0.4.18 - mocha: - specifier: ^11.0.0 - version: 11.7.5 - npm-run-all2: - specifier: ^8.0.0 - version: 8.0.4 - packages/@types/js-reporters: {} packages/ember: @@ -5853,13 +5835,6 @@ packages: engines: {node: '>= 8'} hasBin: true - JSONSelect@0.4.0: - resolution: {integrity: sha512-VRLR3Su35MH+XV2lrvh9O7qWoug/TUyj9tLDjn9rtpUCNnILLrHjgd/tB0KrhugCxUpj3UqoLqfYb3fLJdIQQQ==} - engines: {node: '>=0.4.7'} - - JSV@4.0.2: - resolution: {integrity: sha512-ZJ6wx9xaKJ3yFUhq5/sk82PJMuUyLk277I8mQeyDgCTjGdjWJIvPfaU5LIXaMuaN2UO1X3kZH4+lgphublZUHw==} - abbrev@1.1.1: resolution: {integrity: sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==} @@ -6690,10 +6665,6 @@ packages: resolution: {integrity: sha512-77PSwercCZU2Fc4sX94eF8k8Pxte6JAwL4/ICZLFjJLqegs7kCuAsqqj/70NQF6TvDpgFjkubQB2FW2ZZddvQg==} engines: {node: '>=8'} - cjson@0.3.0: - resolution: {integrity: sha512-bBRQcCIHzI1IVH59fR0bwGrFmi3Btb/JNwM/n401i1DnYgWndpsUBiQRAddLflkZage20A2d25OAWZZk0vBRlA==} - engines: {node: '>= 0.3.0'} - clean-base-url@1.0.0: resolution: {integrity: sha512-9q6ZvUAhbKOSRFY7A/irCQ/rF0KIpa3uXpx6izm8+fp7b2H4hLeUJ+F1YYk9+gDQ/X8Q0MEyYs+tG3cht//HTg==} @@ -6816,10 +6787,6 @@ packages: colorette@2.0.20: resolution: {integrity: sha512-IfEDxwoWIjkeXL1eXcDiow4UbKjhLdq6/EuSVR9GMN7KVH3r9gQ83e73hsz1Nd1T3ijd5xv1wcWRYO+D6kCI2w==} - 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jsonlint@1.6.0: - resolution: {integrity: sha512-x6YLBe6NjdpmIeiklwQOxsZuYj/SOWkT33GlTpaG1UdFGjdWjPcxJ1CWZAX3wA7tarz8E2YHF6KiW5HTapPlXw==} - engines: {node: '>= 0.6'} - hasBin: true - jstat@1.9.6: resolution: {integrity: sha512-rPBkJbK2TnA8pzs93QcDDPlKcrtZWuuCo2dVR0TFLOJSxhqfWOVCSp8aV3/oSbn+4uY4yw1URtLpHQedtmXfug==} @@ -9215,9 +9142,6 @@ packages: resolution: {integrity: sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ==} engines: {node: '>= 0.8.0'} - lex-parser@0.1.4: - resolution: {integrity: sha512-DuAEISsr1H4LOpmFLkyMc8YStiRWZCO8hMsoXAXSbgyfvs2WQhSt0+/FBv3ZU/JBFZMGcE+FWzEBSzwUU7U27w==} - lighthouse-logger@2.0.2: resolution: {integrity: sha512-vWl2+u5jgOQuZR55Z1WM0XDdrJT6mzMP8zHUct7xTlWhuQs+eV0g+QL0RQdFjT54zVmbhLCP8vIVpy1wGn/gCg==} @@ -9734,10 +9658,6 @@ packages: resolution: {integrity: sha512-3l4E8uMPY1HdMMryPRUAl+oIHtXtyiTlIiESNSVSNxcPfzAFzeTbXFQkZfAwBbo0B1qMSG8nUABx+Gd+YrbKrQ==} engines: {node: '>=6'} - nomnom@1.5.2: - resolution: {integrity: sha512-fiVbT7BqxiQqjlR9U3FDGOSERFCKoXVCdxV2FwZuNN7/cmJ42iQx35nUFOAFDcyvemu9Adp+IlsCGlKQYLmBKw==} - deprecated: Package no longer supported. Contact support@npmjs.com for more info. - nopt@3.0.6: resolution: {integrity: sha512-4GUt3kSEYmk4ITxzB/b9vaIDfUVWN/Ml1Fwl11IlnIG2iaJ9O6WXZ9SrYM9NLI8OCBieN2Y8SWC2oJV0RQ7qYg==} hasBin: true @@ -10908,10 +10828,6 @@ packages: resolution: {integrity: sha512-cPiFOTLUKvJFIg4SKVScy4ilPPW6rFgMgfuZJPNoDuMs3nC1HbMUycBoJw77xFIp6z1UJQJOfx6C9GMH80DiTw==} deprecated: See https://github.com/lydell/source-map-url#deprecated - source-map@0.1.43: - resolution: {integrity: sha512-VtCvB9SIQhk3aF6h+N85EaqIaBFIAfZ9Cu+NJHHVvc8BbEcnvDcFw6sqQ2dQrT6SlOrZq3tIvyD9+EGq/lJryQ==} - engines: {node: '>=0.8.0'} - source-map@0.4.4: resolution: {integrity: sha512-Y8nIfcb1s/7DcobUz1yOO1GSp7gyL+D9zLHDehT7iRESqGSxjJ448Sg7rvfgsRJCnKLdSl11uGf0s9X80cH0/A==} engines: {node: '>=0.8.0'} @@ -11503,9 +11419,6 @@ packages: underscore.string@3.3.6: resolution: {integrity: sha512-VoC83HWXmCrF6rgkyxS9GHv8W9Q5nhMKho+OadDJGzL2oDYbYEppBaCMH6pFlwLeqj2QS+hhkw2kpXkSdD1JxQ==} - underscore@1.1.7: - resolution: {integrity: sha512-w4QtCHoLBXw1mjofIDoMyexaEdWGMedWNDhlWTtT1V1lCRqi65Pnoygkh6+WRdr+Bm8ldkBNkNeCsXGMlQS9HQ==} - underscore@1.13.8: resolution: {integrity: sha512-DXtD3ZtEQzc7M8m4cXotyHR+FAS18C64asBYY5vqZexfYryNNnDc02W4hKg3rdQuqOYas1jkseX0+nZXjTXnvQ==} @@ -15547,10 +15460,6 @@ snapshots: dependencies: isexe: 2.0.0 - JSONSelect@0.4.0: {} - - JSV@4.0.2: {} - abbrev@1.1.1: {} accepts@1.3.8: @@ -16763,10 +16672,6 @@ snapshots: ci-info@4.4.0: {} - cjson@0.3.0: - dependencies: - jsonlint: 1.6.0 - clean-base-url@1.0.0: {} clean-css@5.3.3: @@ -16878,14 +16783,10 @@ snapshots: colorette@2.0.20: {} - colors@0.5.1: {} - colors@1.0.3: {} colors@1.4.0: {} - combine-files@1.1.8: {} - combined-stream@0.0.7: dependencies: delayed-stream: 0.0.5 @@ -17317,8 +17218,6 @@ snapshots: eastasianwidth@0.2.0: {} - ebnf-parser@0.1.10: {} - editions@1.3.4: {} editions@2.3.1: @@ -18060,14 +17959,6 @@ snapshots: escape-string-regexp@4.0.0: {} - escodegen@1.3.3: - dependencies: - esprima: 1.1.1 - estraverse: 1.5.1 - esutils: 1.0.0 - optionalDependencies: - source-map: 0.1.43 - eslint-compat-utils@0.5.1(eslint@9.39.4): dependencies: eslint: 9.39.4 @@ -18257,8 +18148,6 @@ snapshots: acorn-jsx: 5.3.2(acorn@8.16.0) eslint-visitor-keys: 4.2.1 - esprima@1.1.1: {} - esprima@3.0.0: {} esprima@4.0.1: {} @@ -18271,16 +18160,12 @@ snapshots: dependencies: estraverse: 5.3.0 - estraverse@1.5.1: {} - estraverse@4.3.0: {} estraverse@5.3.0: {} estree-walker@2.0.2: {} - esutils@1.0.0: {} - esutils@2.0.3: {} etag@1.8.1: {} @@ -19658,22 +19543,6 @@ snapshots: merge-stream: 2.0.0 supports-color: 8.1.1 - jison-lex@0.3.4: - dependencies: - lex-parser: 0.1.4 - nomnom: 1.5.2 - - jison@0.4.18: - dependencies: - JSONSelect: 0.4.0 - cjson: 0.3.0 - ebnf-parser: 0.1.10 - escodegen: 1.3.3 - esprima: 1.1.1 - jison-lex: 0.3.4 - lex-parser: 0.1.4 - nomnom: 1.5.2 - js-reporters@2.1.0: {} js-string-escape@1.0.1: {} @@ -19796,11 +19665,6 @@ snapshots: jsonify@0.0.1: {} - jsonlint@1.6.0: - dependencies: - JSV: 4.0.2 - nomnom: 1.5.2 - jstat@1.9.6: {} keyv@3.1.0: @@ -19847,8 +19711,6 @@ snapshots: prelude-ls: 1.2.1 type-check: 0.4.0 - lex-parser@0.1.4: {} - lighthouse-logger@2.0.2: dependencies: debug: 4.4.3(supports-color@8.1.1) @@ -20370,11 +20232,6 @@ snapshots: node-watch@0.7.3: {} - nomnom@1.5.2: - dependencies: - colors: 0.5.1 - underscore: 1.1.7 - nopt@3.0.6: dependencies: abbrev: 1.1.1 @@ -21718,11 +21575,6 @@ snapshots: source-map-url@0.4.1: {} - source-map@0.1.43: - dependencies: - amdefine: 1.0.1 - optional: true - source-map@0.4.4: dependencies: amdefine: 1.0.1 @@ -22569,8 +22421,6 @@ snapshots: sprintf-js: 1.1.3 util-deprecate: 1.0.2 - underscore@1.1.7: {} - underscore@1.13.8: {} undici-types@6.21.0: {} diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml index ea6c625d4b4..1af3b5ba373 100644 --- a/pnpm-workspace.yaml +++ b/pnpm-workspace.yaml @@ -3,7 +3,7 @@ packages: - 'packages/@ember/*' - 'packages/@glimmer/*' - 'packages/@glimmer-workspace/*' - - 'packages/@handlebars/*' + # @handlebars/parser has been merged into @glimmer/syntax - 'packages/@types/*' - 'packages/*/*/test' - 'smoke-tests/*' diff --git a/rollup.config.mjs b/rollup.config.mjs index 3ab820dbdfa..bb92341963d 100644 --- a/rollup.config.mjs +++ b/rollup.config.mjs @@ -217,7 +217,7 @@ function packages() { '@glimmer-workspace/**', '@glimmer/**', - // @handlebars/parser is a hidden dependency, not an explicit entrypoint + // @handlebars/parser has been merged into @glimmer/syntax '@handlebars/**', ], cwd: 'packages', @@ -283,7 +283,6 @@ export function hiddenDependencies() { findFromProject('@glimmer/syntax', 'simple-html-tokenizer'), 'module' ).path, - '@handlebars/parser': resolve(packageCache.appRoot, 'packages/@handlebars/parser/lib/index.js'), ...walkGlimmerDeps(['@glimmer/compiler']), 'decorator-transforms/runtime': resolve( findFromProject('decorator-transforms').root, From 25a8caa837af572be6730b15b715e9f5fad1f856 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Wed, 8 Apr 2026 22:18:44 -0400 Subject: [PATCH 02/54] Fix CI: restore partial/decorator handling, fix lint issues The Jison grammar still produces PartialStatement, Decorator, etc. nodes, so the base visitor and whitespace control need stubs for them. The Glimmer visitors continue to throw meaningful errors for these unsupported features. Fixes: - Restore visitor stubs for Partial*/Decorator* in hbs-parser - Restore error-throwing handlers in HandlebarsNodeVisitors - Restore type definitions for these nodes in handlebars-ast.ts - Make Program.loc optional (matches parser reality, replaces old UpstreamProgram workaround) - Fix eslint: unused var in exception.js, import/namespace in parse.js - Fix prettier formatting in whitespace-control.js Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/exception.js | 2 +- .../@glimmer/syntax/lib/hbs-parser/helpers.js | 30 ++-- .../@glimmer/syntax/lib/hbs-parser/parse.js | 34 +++-- .../@glimmer/syntax/lib/hbs-parser/visitor.js | 14 ++ .../lib/hbs-parser/whitespace-control.js | 136 +++++++++--------- packages/@glimmer/syntax/lib/parser.ts | 8 +- .../lib/parser/handlebars-node-visitors.ts | 30 +++- .../@glimmer/syntax/lib/v1/handlebars-ast.ts | 47 +++++- 8 files changed, 207 insertions(+), 94 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/exception.js b/packages/@glimmer/syntax/lib/hbs-parser/exception.js index 94ffc7340b7..f5eb2ffaaa5 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/exception.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/exception.js @@ -58,7 +58,7 @@ function Exception(message, node) { this.endColumn = endColumn; } } - } catch (nop) { + } catch { /* Ignore if the browser is very particular */ } } diff --git a/packages/@glimmer/syntax/lib/hbs-parser/helpers.js b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js index f307ff65981..87d60dc8023 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/helpers.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js @@ -99,14 +99,9 @@ export function prepareMustache(path, params, hash, open, strip, locInfo) { let escapeFlag = open.charAt(3) || open.charAt(2), escaped = escapeFlag !== '{' && escapeFlag !== '&'; - if (/\*/.test(open)) { - throw new Exception('Handlebars decorators are not supported in Glimmer', { - loc: this.locInfo(locInfo), - }); - } - + let decorator = /\*/.test(open); return { - type: 'MustacheStatement', + type: decorator ? 'Decorator' : 'MustacheStatement', path, params, hash, @@ -145,11 +140,7 @@ export function prepareBlock(openBlock, program, inverseAndProgram, close, inver validateClose(openBlock, close); } - if (/\*/.test(openBlock.open)) { - throw new Exception('Handlebars decorator blocks are not supported in Glimmer', { - loc: this.locInfo(locInfo), - }); - } + let decorator = /\*/.test(openBlock.open); program.blockParams = openBlock.blockParams; @@ -171,7 +162,7 @@ export function prepareBlock(openBlock, program, inverseAndProgram, close, inver } return { - type: 'BlockStatement', + type: decorator ? 'DecoratorBlock' : 'BlockStatement', path: openBlock.path, params: openBlock.params, hash: openBlock.hash, @@ -213,7 +204,16 @@ export function prepareProgram(statements, loc) { } export function preparePartialBlock(open, program, close, locInfo) { - throw new Exception('Handlebars partial blocks are not supported in Glimmer', { + validateClose(open, close); + + return { + type: 'PartialBlockStatement', + name: open.path, + params: open.params, + hash: open.hash, + program, + openStrip: open.strip, + closeStrip: close && close.strip, loc: this.locInfo(locInfo), - }); + }; } diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parse.js b/packages/@glimmer/syntax/lib/hbs-parser/parse.js index 9927b5f4d73..8b85f7d438b 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parse.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parse.js @@ -1,14 +1,30 @@ import parser from './parser.js'; import WhitespaceControl from './whitespace-control.js'; -import * as Helpers from './helpers.js'; +import { + SourceLocation, + id, + stripFlags, + stripComment, + preparePath, + prepareMustache, + prepareRawBlock, + prepareBlock, + prepareProgram, + preparePartialBlock, +} from './helpers.js'; -let baseHelpers = {}; - -for (let helper in Helpers) { - if (Object.prototype.hasOwnProperty.call(Helpers, helper)) { - baseHelpers[helper] = Helpers[helper]; - } -} +let baseHelpers = { + SourceLocation, + id, + stripFlags, + stripComment, + preparePath, + prepareMustache, + prepareRawBlock, + prepareBlock, + prepareProgram, + preparePartialBlock, +}; export function parseWithoutProcessing(input, options) { // Just return if an already-compiled AST was passed in. @@ -20,7 +36,7 @@ export function parseWithoutProcessing(input, options) { // Altering the shared object here, but this is ok as parser is a sync operation parser.yy.locInfo = function (locInfo) { - return new Helpers.SourceLocation(options && options.srcName, locInfo); + return new SourceLocation(options && options.srcName, locInfo); }; let squareSyntax; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/visitor.js b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js index 7175793325f..740423fc77e 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/visitor.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js @@ -75,8 +75,17 @@ Visitor.prototype = { }, MustacheStatement: visitSubExpression, + Decorator: visitSubExpression, BlockStatement: visitBlock, + DecoratorBlock: visitBlock, + + PartialStatement: visitPartial, + PartialBlockStatement: function (partial) { + visitPartial.call(this, partial); + + this.acceptKey(partial, 'program'); + }, ContentStatement: function (/* content */) {}, CommentStatement: function (/* comment */) {}, @@ -110,5 +119,10 @@ function visitBlock(block) { this.acceptKey(block, 'program'); this.acceptKey(block, 'inverse'); } +function visitPartial(partial) { + this.acceptRequired(partial, 'name'); + this.acceptArray(partial.params); + this.acceptKey(partial, 'hash'); +} export default Visitor; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js index 34cf78045a2..c956da937d0 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js @@ -50,75 +50,81 @@ WhitespaceControl.prototype.Program = function (program) { return program; }; -WhitespaceControl.prototype.BlockStatement = function (block) { - this.accept(block.program); - this.accept(block.inverse); - - let program = block.program || block.inverse, - inverse = block.program && block.inverse, - firstInverse = inverse, - lastInverse = inverse; - - if (inverse && inverse.chained) { - firstInverse = inverse.body[0].program; - - while (lastInverse.chained) { - lastInverse = lastInverse.body[lastInverse.body.length - 1].program; - } - } - - let strip = { - open: block.openStrip.open, - close: block.closeStrip.close, - openStandalone: isNextWhitespace(program.body), - closeStandalone: isPrevWhitespace((firstInverse || program).body), - }; - - if (block.openStrip.close) { - omitRight(program.body, null, true); - } - - if (inverse) { - let inverseStrip = block.inverseStrip; - - if (inverseStrip.open) { - omitLeft(program.body, null, true); - } - - if (inverseStrip.close) { - omitRight(firstInverse.body, null, true); - } - if (block.closeStrip.open) { - omitLeft(lastInverse.body, null, true); - } - - if ( - !this.options.ignoreStandalone && - isPrevWhitespace(program.body) && - isNextWhitespace(firstInverse.body) - ) { - omitLeft(program.body); - omitRight(firstInverse.body); - } - } else if (block.closeStrip.open) { - omitLeft(program.body, null, true); - } - - return strip; -}; - -WhitespaceControl.prototype.MustacheStatement = function (mustache) { +WhitespaceControl.prototype.BlockStatement = + WhitespaceControl.prototype.DecoratorBlock = + WhitespaceControl.prototype.PartialBlockStatement = + function (block) { + this.accept(block.program); + this.accept(block.inverse); + + let program = block.program || block.inverse, + inverse = block.program && block.inverse, + firstInverse = inverse, + lastInverse = inverse; + + if (inverse && inverse.chained) { + firstInverse = inverse.body[0].program; + + while (lastInverse.chained) { + lastInverse = lastInverse.body[lastInverse.body.length - 1].program; + } + } + + let strip = { + open: block.openStrip.open, + close: block.closeStrip.close, + openStandalone: isNextWhitespace(program.body), + closeStandalone: isPrevWhitespace((firstInverse || program).body), + }; + + if (block.openStrip.close) { + omitRight(program.body, null, true); + } + + if (inverse) { + let inverseStrip = block.inverseStrip; + + if (inverseStrip.open) { + omitLeft(program.body, null, true); + } + + if (inverseStrip.close) { + omitRight(firstInverse.body, null, true); + } + if (block.closeStrip.open) { + omitLeft(lastInverse.body, null, true); + } + + if ( + !this.options.ignoreStandalone && + isPrevWhitespace(program.body) && + isNextWhitespace(firstInverse.body) + ) { + omitLeft(program.body); + omitRight(firstInverse.body); + } + } else if (block.closeStrip.open) { + omitLeft(program.body, null, true); + } + + return strip; + }; + +WhitespaceControl.prototype.Decorator = WhitespaceControl.prototype.MustacheStatement = function ( + mustache +) { return mustache.strip; }; -WhitespaceControl.prototype.CommentStatement = function (node) { - let strip = node.strip || {}; - return { - inlineStandalone: true, - open: strip.open, - close: strip.close, +WhitespaceControl.prototype.PartialStatement = WhitespaceControl.prototype.CommentStatement = + function (node) { + let strip = node.strip || {}; + return { + inlineStandalone: true, + open: strip.open, + close: strip.close, + }; }; -}; function isPrevWhitespace(body, i, isRoot) { if (i === undefined) { diff --git a/packages/@glimmer/syntax/lib/parser.ts b/packages/@glimmer/syntax/lib/parser.ts index 317b072e4f9..b4f39f8d867 100644 --- a/packages/@glimmer/syntax/lib/parser.ts +++ b/packages/@glimmer/syntax/lib/parser.ts @@ -90,7 +90,13 @@ export abstract class Parser { abstract Program(node: HBS.Program): HBS.Output<'Program'>; abstract MustacheStatement(node: HBS.MustacheStatement): HBS.Output<'MustacheStatement'>; + abstract Decorator(node: HBS.Decorator): HBS.Output<'Decorator'>; abstract BlockStatement(node: HBS.BlockStatement): HBS.Output<'BlockStatement'>; + abstract DecoratorBlock(node: HBS.DecoratorBlock): HBS.Output<'DecoratorBlock'>; + abstract PartialStatement(node: HBS.PartialStatement): HBS.Output<'PartialStatement'>; + abstract PartialBlockStatement( + node: HBS.PartialBlockStatement + ): HBS.Output<'PartialBlockStatement'>; abstract ContentStatement(node: HBS.ContentStatement): HBS.Output<'ContentStatement'>; abstract CommentStatement(node: HBS.CommentStatement): HBS.Output<'CommentStatement'>; abstract SubExpression(node: HBS.SubExpression): HBS.Output<'SubExpression'>; @@ -163,7 +169,7 @@ export abstract class Parser { return getLast(asPresentArray(this.elementStack)); } - sourceForNode(node: HBS.Node, endNode?: { loc: HBS.SourceLocation }): string { + sourceForNode(node: HBS.CommonNode, endNode?: { loc: HBS.SourceLocation }): string { let firstLine = node.loc.start.line - 1; let currentLine = firstLine - 1; let firstColumn = node.loc.start.column; diff --git a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts index f9ad6d9c920..72e0657d14e 100644 --- a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts +++ b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts @@ -109,7 +109,7 @@ export abstract class HandlebarsNodeVisitors extends Parser { BlockStatement(block: HBS.BlockStatement): ASTv1.BlockStatement | void { if (this.tokenizer.state === 'comment') { localAssert(block.loc, '[BUG] BlockStatement in parser unexpectedly did not have loc'); - this.appendToCommentData(this.sourceForNode(block as HBS.Node)); + this.appendToCommentData(this.sourceForNode(block as HBS.CommonNode)); return; } @@ -299,6 +299,34 @@ export abstract class HandlebarsNodeVisitors extends Parser { this.currentAttr.currentPart = null; } + PartialStatement(partial: HBS.PartialStatement): never { + throw generateSyntaxError( + `Handlebars partials are not supported`, + this.source.spanFor(partial.loc) + ); + } + + PartialBlockStatement(partialBlock: HBS.PartialBlockStatement): never { + throw generateSyntaxError( + `Handlebars partial blocks are not supported`, + this.source.spanFor(partialBlock.loc) + ); + } + + Decorator(decorator: HBS.Decorator): never { + throw generateSyntaxError( + `Handlebars decorators are not supported`, + this.source.spanFor(decorator.loc) + ); + } + + DecoratorBlock(decoratorBlock: HBS.DecoratorBlock): never { + throw generateSyntaxError( + `Handlebars decorator blocks are not supported`, + this.source.spanFor(decoratorBlock.loc) + ); + } + ContentStatement(content: HBS.ContentStatement): void { updateTokenizerLocation(this.tokenizer, content); diff --git a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts index 5dcd7432b06..6796d639201 100644 --- a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts +++ b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts @@ -16,7 +16,11 @@ export interface CommonNode { export interface NodeMap { Program: { input: Program; output: ASTv1.Block }; MustacheStatement: { input: MustacheStatement; output: ASTv1.MustacheStatement | void }; + Decorator: { input: Decorator; output: never }; BlockStatement: { input: BlockStatement; output: ASTv1.BlockStatement | void }; + DecoratorBlock: { input: DecoratorBlock; output: never }; + PartialStatement: { input: PartialStatement; output: never }; + PartialBlockStatement: { input: PartialBlockStatement; output: never }; ContentStatement: { input: ContentStatement; output: void }; CommentStatement: { input: CommentStatement; output: ASTv1.MustacheCommentStatement | null }; SubExpression: { input: SubExpression; output: ASTv1.SubExpression }; @@ -44,14 +48,26 @@ export interface Position { column: number; } -export interface Program extends CommonNode { +/** + * `loc` may be missing on Program nodes produced by the Jison parser when the + * program body is empty and no location info can be inferred from child nodes. + */ +export interface Program extends Omit { type: 'Program'; + loc?: SourceLocation; body: Statement[]; blockParams?: string[]; chained?: boolean; } -export type Statement = MustacheStatement | BlockStatement | ContentStatement | CommentStatement; +export type Statement = + | MustacheStatement + | BlockStatement + | DecoratorBlock + | PartialStatement + | PartialBlockStatement + | ContentStatement + | CommentStatement; export interface CommonMustache extends CommonNode { path: Expression; @@ -65,6 +81,10 @@ export interface MustacheStatement extends CommonMustache { type: 'MustacheStatement'; } +export interface Decorator extends CommonMustache { + type: 'DecoratorStatement'; +} + export interface CommonBlock extends CommonNode { chained: boolean; path: PathExpression | SubExpression; @@ -81,6 +101,29 @@ export interface BlockStatement extends CommonBlock { type: 'BlockStatement'; } +export interface DecoratorBlock extends CommonBlock { + type: 'DecoratorBlock'; +} + +export interface PartialStatement extends CommonNode { + type: 'PartialStatement'; + name: PathExpression | SubExpression; + params: Expression[]; + hash: Hash; + indent: string; + strip: StripFlags; +} + +export interface PartialBlockStatement extends CommonNode { + type: 'PartialBlockStatement'; + name: PathExpression | SubExpression; + params: Expression[]; + hash: Hash; + program: Program; + openStrip: StripFlags; + closeStrip: StripFlags; +} + export interface ContentStatement extends CommonNode { type: 'ContentStatement'; value: string; From 5964c83b39ad40d78e836da2442e195f8497cc8f Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Wed, 8 Apr 2026 22:21:25 -0400 Subject: [PATCH 03/54] Update .prettierignore for moved grammar files Co-Authored-By: Claude Opus 4.6 (1M context) --- .prettierignore | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/.prettierignore b/.prettierignore index aad3009a647..68ebb5c9fa2 100644 --- a/.prettierignore +++ b/.prettierignore @@ -7,8 +7,8 @@ docs/ **/smoke-tests/ **/types/ **/type-tests/ -packages/@handlebars/**/*.l -packages/@handlebars/**/*.yy +packages/@glimmer/syntax/lib/hbs-parser/**/*.l +packages/@glimmer/syntax/lib/hbs-parser/**/*.yy CHANGELOG.md package.json pnpm-lock.yaml From 95b185f242041b27c1822a8303be8e3800a79a9f Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Wed, 8 Apr 2026 22:51:37 -0400 Subject: [PATCH 04/54] Simplify inlined handlebars parser for Glimmer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now that we own the parser code, remove Handlebars features and legacy code that Glimmer never uses: - Reject decorators and partial blocks at parse time in helpers.js instead of creating AST nodes that get rejected later. This lets us remove Decorator/DecoratorBlock/PartialBlockStatement from the visitor, whitespace-control, type definitions, and Glimmer visitors. - Remove `depth` from PathExpression (tracked `../` context changes that Glimmer always rejects — never read by any Glimmer code) - Remove unused syntax extension points (square/hash options in parse.js) that Glimmer never passes - Simplify exception.js — remove IE/old-Safari compat hacks (Object.defineProperty check, error property copying loop) - Remove partial-specific indent handling from whitespace-control (dead code since Glimmer rejects all partials) - Make visitor.accept() skip unknown node types instead of throwing, so PartialStatement (produced inline by the grammar) passes through whitespace control to the Glimmer visitor which gives a proper error Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/exception.js | 61 ++------ .../@glimmer/syntax/lib/hbs-parser/helpers.js | 38 +++-- .../@glimmer/syntax/lib/hbs-parser/parse.js | 33 +---- .../@glimmer/syntax/lib/hbs-parser/visitor.js | 19 +-- .../lib/hbs-parser/whitespace-control.js | 136 +++++++++--------- packages/@glimmer/syntax/lib/parser.ts | 5 - .../lib/parser/handlebars-node-visitors.ts | 22 +-- .../@glimmer/syntax/lib/v1/handlebars-ast.ts | 27 +--- 8 files changed, 104 insertions(+), 237 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/exception.js b/packages/@glimmer/syntax/lib/hbs-parser/exception.js index f5eb2ffaaa5..45b32672b14 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/exception.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/exception.js @@ -1,68 +1,25 @@ -const errorProps = [ - 'description', - 'fileName', - 'lineNumber', - 'endLineNumber', - 'message', - 'name', - 'number', - 'stack', -]; - function Exception(message, node) { let loc = node && node.loc, line, - endLineNumber, - column, - endColumn; + column; if (loc) { line = loc.start.line; - endLineNumber = loc.end.line; column = loc.start.column; - endColumn = loc.end.column; - message += ' - ' + line + ':' + column; } - let tmp = Error.prototype.constructor.call(this, message); - - // Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work. - for (let idx = 0; idx < errorProps.length; idx++) { - this[errorProps[idx]] = tmp[errorProps[idx]]; - } + let error = new Error(message); + error.name = 'Exception'; - /* istanbul ignore else */ - if (Error.captureStackTrace) { - Error.captureStackTrace(this, Exception); + if (loc) { + error.lineNumber = line; + error.endLineNumber = loc.end.line; + error.column = column; + error.endColumn = loc.end.column; } - try { - if (loc) { - this.lineNumber = line; - this.endLineNumber = endLineNumber; - - // Work around issue under safari where we can't directly set the column value - /* istanbul ignore next */ - if (Object.defineProperty) { - Object.defineProperty(this, 'column', { - value: column, - enumerable: true, - }); - Object.defineProperty(this, 'endColumn', { - value: endColumn, - enumerable: true, - }); - } else { - this.column = column; - this.endColumn = endColumn; - } - } - } catch { - /* Ignore if the browser is very particular */ - } + return error; } -Exception.prototype = new Error(); - export default Exception; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/helpers.js b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js index 87d60dc8023..d9b1ea75846 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/helpers.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js @@ -55,7 +55,6 @@ export function preparePath(data, sexpr, parts, loc) { } let tail = []; - let depth = 0; let isThis = false; for (let i = 0, l = parts.length; i < l; i++) { @@ -70,11 +69,11 @@ export function preparePath(data, sexpr, parts, loc) { if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { if (tail.length > 0) { throw new Exception('Invalid path: ' + original, { loc }); - } else if (part === '..') { - depth++; } else if (part === 'this') { isThis = true; } + // '..' and '.' are rejected by Glimmer downstream but must not + // be pushed into `tail` — just let them affect `original`. } else { tail.push(`${partPrefix}${part}`); } @@ -86,7 +85,6 @@ export function preparePath(data, sexpr, parts, loc) { type: 'PathExpression', this: isThis, data, - depth, head, tail, parts: head ? [head, ...tail] : tail, @@ -96,12 +94,17 @@ export function preparePath(data, sexpr, parts, loc) { } export function prepareMustache(path, params, hash, open, strip, locInfo) { + if (/\*/.test(open)) { + throw new Exception('Handlebars decorators are not supported in Glimmer', { + loc: this.locInfo(locInfo), + }); + } + let escapeFlag = open.charAt(3) || open.charAt(2), escaped = escapeFlag !== '{' && escapeFlag !== '&'; - let decorator = /\*/.test(open); return { - type: decorator ? 'Decorator' : 'MustacheStatement', + type: 'MustacheStatement', path, params, hash, @@ -140,7 +143,11 @@ export function prepareBlock(openBlock, program, inverseAndProgram, close, inver validateClose(openBlock, close); } - let decorator = /\*/.test(openBlock.open); + if (/\*/.test(openBlock.open)) { + throw new Exception('Handlebars decorator blocks are not supported in Glimmer', { + loc: this.locInfo(locInfo), + }); + } program.blockParams = openBlock.blockParams; @@ -162,7 +169,7 @@ export function prepareBlock(openBlock, program, inverseAndProgram, close, inver } return { - type: decorator ? 'DecoratorBlock' : 'BlockStatement', + type: 'BlockStatement', path: openBlock.path, params: openBlock.params, hash: openBlock.hash, @@ -203,17 +210,8 @@ export function prepareProgram(statements, loc) { }; } -export function preparePartialBlock(open, program, close, locInfo) { - validateClose(open, close); - - return { - type: 'PartialBlockStatement', - name: open.path, - params: open.params, - hash: open.hash, - program, - openStrip: open.strip, - closeStrip: close && close.strip, +export function preparePartialBlock(_open, _program, _close, locInfo) { + throw new Exception('Handlebars partial blocks are not supported in Glimmer', { loc: this.locInfo(locInfo), - }; + }); } diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parse.js b/packages/@glimmer/syntax/lib/hbs-parser/parse.js index 8b85f7d438b..397469c1769 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parse.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parse.js @@ -34,45 +34,20 @@ export function parseWithoutProcessing(input, options) { parser.yy = baseHelpers; - // Altering the shared object here, but this is ok as parser is a sync operation parser.yy.locInfo = function (locInfo) { return new SourceLocation(options && options.srcName, locInfo); }; - let squareSyntax; - - if (typeof options?.syntax?.square === 'function') { - squareSyntax = options.syntax.square; - } else if (options?.syntax?.square === 'node') { - squareSyntax = arrayLiteralNode; - } else { - squareSyntax = 'string'; - } - - let hashSyntax; - - if (typeof options?.syntax?.hash === 'function') { - hashSyntax = options.syntax.hash; - } else { - hashSyntax = hashLiteralNode; - } - + // The lexer needs a syntax.square value to decide how to handle `[`. + // Glimmer uses the default 'string' mode (bracket-escaped identifiers). parser.yy.syntax = { - square: squareSyntax, - hash: hashSyntax, + square: 'string', + hash: hashLiteralNode, }; return parser.parse(input); } -function arrayLiteralNode(array, loc) { - return { - type: 'ArrayLiteral', - items: array, - loc, - }; -} - function hashLiteralNode(hash, loc) { return { type: 'HashLiteral', diff --git a/packages/@glimmer/syntax/lib/hbs-parser/visitor.js b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js index 740423fc77e..6868732e225 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/visitor.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js @@ -50,8 +50,11 @@ Visitor.prototype = { return; } + // Silently skip node types that don't have a visitor method (e.g. + // PartialStatement which is produced by the grammar but unsupported + // in Glimmer — the Glimmer visitor layer handles the error). if (!this[object.type]) { - throw new Exception('Unknown type: ' + object.type, object); + return; } if (this.current) { @@ -75,17 +78,8 @@ Visitor.prototype = { }, MustacheStatement: visitSubExpression, - Decorator: visitSubExpression, BlockStatement: visitBlock, - DecoratorBlock: visitBlock, - - PartialStatement: visitPartial, - PartialBlockStatement: function (partial) { - visitPartial.call(this, partial); - - this.acceptKey(partial, 'program'); - }, ContentStatement: function (/* content */) {}, CommentStatement: function (/* comment */) {}, @@ -119,10 +113,5 @@ function visitBlock(block) { this.acceptKey(block, 'program'); this.acceptKey(block, 'inverse'); } -function visitPartial(partial) { - this.acceptRequired(partial, 'name'); - this.acceptArray(partial.params); - this.acceptKey(partial, 'hash'); -} export default Visitor; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js index c956da937d0..34cf78045a2 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js @@ -50,81 +50,75 @@ WhitespaceControl.prototype.Program = function (program) { return program; }; -WhitespaceControl.prototype.BlockStatement = - WhitespaceControl.prototype.DecoratorBlock = - WhitespaceControl.prototype.PartialBlockStatement = - function (block) { - this.accept(block.program); - this.accept(block.inverse); - - let program = block.program || block.inverse, - inverse = block.program && block.inverse, - firstInverse = inverse, - lastInverse = inverse; - - if (inverse && inverse.chained) { - firstInverse = inverse.body[0].program; - - while (lastInverse.chained) { - lastInverse = lastInverse.body[lastInverse.body.length - 1].program; - } - } - - let strip = { - open: block.openStrip.open, - close: block.closeStrip.close, - openStandalone: isNextWhitespace(program.body), - closeStandalone: isPrevWhitespace((firstInverse || program).body), - }; - - if (block.openStrip.close) { - omitRight(program.body, null, true); - } - - if (inverse) { - let inverseStrip = block.inverseStrip; - - if (inverseStrip.open) { - omitLeft(program.body, null, true); - } - - if (inverseStrip.close) { - omitRight(firstInverse.body, null, true); - } - if (block.closeStrip.open) { - omitLeft(lastInverse.body, null, true); - } - - if ( - !this.options.ignoreStandalone && - isPrevWhitespace(program.body) && - isNextWhitespace(firstInverse.body) - ) { - omitLeft(program.body); - omitRight(firstInverse.body); - } - } else if (block.closeStrip.open) { - omitLeft(program.body, null, true); - } - - return strip; - }; - -WhitespaceControl.prototype.Decorator = WhitespaceControl.prototype.MustacheStatement = function ( - mustache -) { +WhitespaceControl.prototype.BlockStatement = function (block) { + this.accept(block.program); + this.accept(block.inverse); + + let program = block.program || block.inverse, + inverse = block.program && block.inverse, + firstInverse = inverse, + lastInverse = inverse; + + if (inverse && inverse.chained) { + firstInverse = inverse.body[0].program; + + while (lastInverse.chained) { + lastInverse = lastInverse.body[lastInverse.body.length - 1].program; + } + } + + let strip = { + open: block.openStrip.open, + close: block.closeStrip.close, + openStandalone: isNextWhitespace(program.body), + closeStandalone: isPrevWhitespace((firstInverse || program).body), + }; + + if (block.openStrip.close) { + omitRight(program.body, null, true); + } + + if (inverse) { + let inverseStrip = block.inverseStrip; + + if (inverseStrip.open) { + omitLeft(program.body, null, true); + } + + if (inverseStrip.close) { + omitRight(firstInverse.body, null, true); + } + if (block.closeStrip.open) { + omitLeft(lastInverse.body, null, true); + } + + if ( + !this.options.ignoreStandalone && + isPrevWhitespace(program.body) && + isNextWhitespace(firstInverse.body) + ) { + omitLeft(program.body); + omitRight(firstInverse.body); + } + } else if (block.closeStrip.open) { + omitLeft(program.body, null, true); + } + + return strip; +}; + +WhitespaceControl.prototype.MustacheStatement = function (mustache) { return mustache.strip; }; -WhitespaceControl.prototype.PartialStatement = WhitespaceControl.prototype.CommentStatement = - function (node) { - let strip = node.strip || {}; - return { - inlineStandalone: true, - open: strip.open, - close: strip.close, - }; +WhitespaceControl.prototype.CommentStatement = function (node) { + let strip = node.strip || {}; + return { + inlineStandalone: true, + open: strip.open, + close: strip.close, }; +}; function isPrevWhitespace(body, i, isRoot) { if (i === undefined) { diff --git a/packages/@glimmer/syntax/lib/parser.ts b/packages/@glimmer/syntax/lib/parser.ts index b4f39f8d867..51b1b0695b8 100644 --- a/packages/@glimmer/syntax/lib/parser.ts +++ b/packages/@glimmer/syntax/lib/parser.ts @@ -90,13 +90,8 @@ export abstract class Parser { abstract Program(node: HBS.Program): HBS.Output<'Program'>; abstract MustacheStatement(node: HBS.MustacheStatement): HBS.Output<'MustacheStatement'>; - abstract Decorator(node: HBS.Decorator): HBS.Output<'Decorator'>; abstract BlockStatement(node: HBS.BlockStatement): HBS.Output<'BlockStatement'>; - abstract DecoratorBlock(node: HBS.DecoratorBlock): HBS.Output<'DecoratorBlock'>; abstract PartialStatement(node: HBS.PartialStatement): HBS.Output<'PartialStatement'>; - abstract PartialBlockStatement( - node: HBS.PartialBlockStatement - ): HBS.Output<'PartialBlockStatement'>; abstract ContentStatement(node: HBS.ContentStatement): HBS.Output<'ContentStatement'>; abstract CommentStatement(node: HBS.CommentStatement): HBS.Output<'CommentStatement'>; abstract SubExpression(node: HBS.SubExpression): HBS.Output<'SubExpression'>; diff --git a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts index 72e0657d14e..6fb35842164 100644 --- a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts +++ b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts @@ -306,26 +306,8 @@ export abstract class HandlebarsNodeVisitors extends Parser { ); } - PartialBlockStatement(partialBlock: HBS.PartialBlockStatement): never { - throw generateSyntaxError( - `Handlebars partial blocks are not supported`, - this.source.spanFor(partialBlock.loc) - ); - } - - Decorator(decorator: HBS.Decorator): never { - throw generateSyntaxError( - `Handlebars decorators are not supported`, - this.source.spanFor(decorator.loc) - ); - } - - DecoratorBlock(decoratorBlock: HBS.DecoratorBlock): never { - throw generateSyntaxError( - `Handlebars decorator blocks are not supported`, - this.source.spanFor(decoratorBlock.loc) - ); - } + // Decorator, DecoratorBlock, and PartialBlockStatement are rejected at + // parse time in hbs-parser/helpers.js and never reach the visitor layer. ContentStatement(content: HBS.ContentStatement): void { updateTokenizerLocation(this.tokenizer, content); diff --git a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts index 6796d639201..3eb57d4b015 100644 --- a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts +++ b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts @@ -4,7 +4,8 @@ * https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/handlebars/index.d.ts. * * The parser is now inlined in @glimmer/syntax (lib/hbs-parser/) and these types reflect the - * Glimmer-specific subset of Handlebars: no partials, no decorators. + * Glimmer-specific subset of Handlebars: no partials blocks, no decorators. PartialStatement + * is retained because the grammar produces it inline; the Glimmer visitor rejects it. */ import type * as ASTv1 from './api'; @@ -16,11 +17,8 @@ export interface CommonNode { export interface NodeMap { Program: { input: Program; output: ASTv1.Block }; MustacheStatement: { input: MustacheStatement; output: ASTv1.MustacheStatement | void }; - Decorator: { input: Decorator; output: never }; BlockStatement: { input: BlockStatement; output: ASTv1.BlockStatement | void }; - DecoratorBlock: { input: DecoratorBlock; output: never }; PartialStatement: { input: PartialStatement; output: never }; - PartialBlockStatement: { input: PartialBlockStatement; output: never }; ContentStatement: { input: ContentStatement; output: void }; CommentStatement: { input: CommentStatement; output: ASTv1.MustacheCommentStatement | null }; SubExpression: { input: SubExpression; output: ASTv1.SubExpression }; @@ -63,9 +61,7 @@ export interface Program extends Omit { export type Statement = | MustacheStatement | BlockStatement - | DecoratorBlock | PartialStatement - | PartialBlockStatement | ContentStatement | CommentStatement; @@ -81,10 +77,6 @@ export interface MustacheStatement extends CommonMustache { type: 'MustacheStatement'; } -export interface Decorator extends CommonMustache { - type: 'DecoratorStatement'; -} - export interface CommonBlock extends CommonNode { chained: boolean; path: PathExpression | SubExpression; @@ -101,10 +93,6 @@ export interface BlockStatement extends CommonBlock { type: 'BlockStatement'; } -export interface DecoratorBlock extends CommonBlock { - type: 'DecoratorBlock'; -} - export interface PartialStatement extends CommonNode { type: 'PartialStatement'; name: PathExpression | SubExpression; @@ -114,16 +102,6 @@ export interface PartialStatement extends CommonNode { strip: StripFlags; } -export interface PartialBlockStatement extends CommonNode { - type: 'PartialBlockStatement'; - name: PathExpression | SubExpression; - params: Expression[]; - hash: Hash; - program: Program; - openStrip: StripFlags; - closeStrip: StripFlags; -} - export interface ContentStatement extends CommonNode { type: 'ContentStatement'; value: string; @@ -149,7 +127,6 @@ export interface PathExpression extends CommonNode { type: 'PathExpression'; this: boolean; data: boolean; - depth: number; parts: string[]; original: string; } From 32bfd3c90bece62863c9a6f99116fd2d5e590255 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Wed, 8 Apr 2026 22:58:48 -0400 Subject: [PATCH 05/54] Convert Exception to proper Error subclass Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/exception.js | 33 ++++++++----------- 1 file changed, 13 insertions(+), 20 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/exception.js b/packages/@glimmer/syntax/lib/hbs-parser/exception.js index 45b32672b14..86cf908fa2a 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/exception.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/exception.js @@ -1,25 +1,18 @@ -function Exception(message, node) { - let loc = node && node.loc, - line, - column; +export default class Exception extends Error { + constructor(message, node) { + let loc = node && node.loc; - if (loc) { - line = loc.start.line; - column = loc.start.column; - message += ' - ' + line + ':' + column; - } + if (loc) { + message += ' - ' + loc.start.line + ':' + loc.start.column; + } - let error = new Error(message); - error.name = 'Exception'; + super(message); - if (loc) { - error.lineNumber = line; - error.endLineNumber = loc.end.line; - error.column = column; - error.endColumn = loc.end.column; + if (loc) { + this.lineNumber = loc.start.line; + this.endLineNumber = loc.end.line; + this.column = loc.start.column; + this.endColumn = loc.end.column; + } } - - return error; } - -export default Exception; From baa4379ff6ec5b3e56a5b4a1ac35036d9a3533ff Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 00:25:43 -0400 Subject: [PATCH 06/54] Replace Jison-generated parser with recursive-descent parser Replace the 2032-line Jison-generated parser (parser.js), 217-line helpers (helpers.js), and grammar source files (handlebars.yy, handlebars.l) with a single 1583-line recursive-descent parser (rd-parser.js). The new parser: - Produces the same HBS AST as the Jison parser, so the rest of the pipeline (WhitespaceControl, HandlebarsNodeVisitors) works unchanged - Handles all expression types: paths, sub-expressions, hash pairs, literals, block params, strip flags, comments, raw blocks - Rejects decorators and partial blocks at parse time with clear errors - Is readable, debuggable JS instead of an opaque state machine - Removes the need for Jison as a build tool Net change: -1,040 lines Co-Authored-By: Claude Opus 4.6 (1M context) --- .prettierignore | 2 - eslint.config.mjs | 2 - .../@glimmer/syntax/lib/hbs-parser/helpers.js | 217 -- .../@glimmer/syntax/lib/hbs-parser/parse.js | 50 +- .../@glimmer/syntax/lib/hbs-parser/parser.js | 2032 ----------------- .../syntax/lib/hbs-parser/rd-parser.js | 1583 +++++++++++++ .../syntax/lib/hbs-parser/src/handlebars.l | 144 -- .../syntax/lib/hbs-parser/src/handlebars.yy | 179 -- .../lib/hbs-parser/src/parser-suffix.js | 1 - .../lib/parser/handlebars-node-visitors.ts | 2 +- 10 files changed, 1586 insertions(+), 2626 deletions(-) delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/helpers.js delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/parser.js create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.l delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.yy delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/src/parser-suffix.js diff --git a/.prettierignore b/.prettierignore index 68ebb5c9fa2..ba24e3a5116 100644 --- a/.prettierignore +++ b/.prettierignore @@ -7,8 +7,6 @@ docs/ **/smoke-tests/ **/types/ **/type-tests/ -packages/@glimmer/syntax/lib/hbs-parser/**/*.l -packages/@glimmer/syntax/lib/hbs-parser/**/*.yy CHANGELOG.md package.json pnpm-lock.yaml diff --git a/eslint.config.mjs b/eslint.config.mjs index 60277459c1e..abd534fa12b 100644 --- a/eslint.config.mjs +++ b/eslint.config.mjs @@ -28,8 +28,6 @@ export default [ '**/type-tests/', 'internal-docs/guides/**', 'packages/@glimmer-workspace/**', - 'packages/@glimmer/syntax/lib/hbs-parser/parser.js', - 'packages/@glimmer/syntax/lib/hbs-parser/src/**', 'tracerbench-testing/', ], }, diff --git a/packages/@glimmer/syntax/lib/hbs-parser/helpers.js b/packages/@glimmer/syntax/lib/hbs-parser/helpers.js deleted file mode 100644 index d9b1ea75846..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/helpers.js +++ /dev/null @@ -1,217 +0,0 @@ -import Exception from './exception.js'; - -function validateClose(open, close) { - close = close.path ? close.path.original : close; - - if (open.path.original !== close) { - let errorNode = { loc: open.path.loc }; - - throw new Exception(open.path.original + " doesn't match " + close, errorNode); - } -} - -export function SourceLocation(source, locInfo) { - this.source = source; - this.start = { - line: locInfo.first_line, - column: locInfo.first_column, - }; - this.end = { - line: locInfo.last_line, - column: locInfo.last_column, - }; -} - -export function id(token) { - if (/^\[.*\]$/.test(token)) { - return token.substring(1, token.length - 1); - } else { - return token; - } -} - -export function stripFlags(open, close) { - return { - open: open.charAt(2) === '~', - close: close.charAt(close.length - 3) === '~', - }; -} - -export function stripComment(comment) { - return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, ''); -} - -export function preparePath(data, sexpr, parts, loc) { - loc = this.locInfo(loc); - - let original; - - if (data) { - original = '@'; - } else if (sexpr) { - original = sexpr.original + '.'; - } else { - original = ''; - } - - let tail = []; - let isThis = false; - - for (let i = 0, l = parts.length; i < l; i++) { - let part = parts[i].part; - let isLiteral = parts[i].original !== part; - let separator = parts[i].separator; - - let partPrefix = separator === '.#' ? '#' : ''; - - original += (separator || '') + part; - - if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { - if (tail.length > 0) { - throw new Exception('Invalid path: ' + original, { loc }); - } else if (part === 'this') { - isThis = true; - } - // '..' and '.' are rejected by Glimmer downstream but must not - // be pushed into `tail` — just let them affect `original`. - } else { - tail.push(`${partPrefix}${part}`); - } - } - - let head = sexpr || tail.shift(); - - return { - type: 'PathExpression', - this: isThis, - data, - head, - tail, - parts: head ? [head, ...tail] : tail, - original, - loc, - }; -} - -export function prepareMustache(path, params, hash, open, strip, locInfo) { - if (/\*/.test(open)) { - throw new Exception('Handlebars decorators are not supported in Glimmer', { - loc: this.locInfo(locInfo), - }); - } - - let escapeFlag = open.charAt(3) || open.charAt(2), - escaped = escapeFlag !== '{' && escapeFlag !== '&'; - - return { - type: 'MustacheStatement', - path, - params, - hash, - escaped, - strip, - loc: this.locInfo(locInfo), - }; -} - -export function prepareRawBlock(openRawBlock, contents, close, locInfo) { - validateClose(openRawBlock, close); - - locInfo = this.locInfo(locInfo); - let program = { - type: 'Program', - body: contents, - strip: {}, - loc: locInfo, - }; - - return { - type: 'BlockStatement', - path: openRawBlock.path, - params: openRawBlock.params, - hash: openRawBlock.hash, - program, - openStrip: {}, - inverseStrip: {}, - closeStrip: {}, - loc: locInfo, - }; -} - -export function prepareBlock(openBlock, program, inverseAndProgram, close, inverted, locInfo) { - if (close && close.path) { - validateClose(openBlock, close); - } - - if (/\*/.test(openBlock.open)) { - throw new Exception('Handlebars decorator blocks are not supported in Glimmer', { - loc: this.locInfo(locInfo), - }); - } - - program.blockParams = openBlock.blockParams; - - let inverse, inverseStrip; - - if (inverseAndProgram) { - if (inverseAndProgram.chain) { - inverseAndProgram.program.body[0].closeStrip = close.strip; - } - - inverseStrip = inverseAndProgram.strip; - inverse = inverseAndProgram.program; - } - - if (inverted) { - inverted = inverse; - inverse = program; - program = inverted; - } - - return { - type: 'BlockStatement', - path: openBlock.path, - params: openBlock.params, - hash: openBlock.hash, - program, - inverse, - openStrip: openBlock.strip, - inverseStrip, - closeStrip: close && close.strip, - loc: this.locInfo(locInfo), - }; -} - -export function prepareProgram(statements, loc) { - if (!loc && statements.length) { - const firstLoc = statements[0].loc, - lastLoc = statements[statements.length - 1].loc; - - if (firstLoc && lastLoc) { - loc = { - source: firstLoc.source, - start: { - line: firstLoc.start.line, - column: firstLoc.start.column, - }, - end: { - line: lastLoc.end.line, - column: lastLoc.end.column, - }, - }; - } - } - - return { - type: 'Program', - body: statements, - strip: {}, - loc: loc, - }; -} - -export function preparePartialBlock(_open, _program, _close, locInfo) { - throw new Exception('Handlebars partial blocks are not supported in Glimmer', { - loc: this.locInfo(locInfo), - }); -} diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parse.js b/packages/@glimmer/syntax/lib/hbs-parser/parse.js index 397469c1769..9eab75b50d2 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parse.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parse.js @@ -1,30 +1,5 @@ -import parser from './parser.js'; +import { rdParse } from './rd-parser.js'; import WhitespaceControl from './whitespace-control.js'; -import { - SourceLocation, - id, - stripFlags, - stripComment, - preparePath, - prepareMustache, - prepareRawBlock, - prepareBlock, - prepareProgram, - preparePartialBlock, -} from './helpers.js'; - -let baseHelpers = { - SourceLocation, - id, - stripFlags, - stripComment, - preparePath, - prepareMustache, - prepareRawBlock, - prepareBlock, - prepareProgram, - preparePartialBlock, -}; export function parseWithoutProcessing(input, options) { // Just return if an already-compiled AST was passed in. @@ -32,28 +7,7 @@ export function parseWithoutProcessing(input, options) { return input; } - parser.yy = baseHelpers; - - parser.yy.locInfo = function (locInfo) { - return new SourceLocation(options && options.srcName, locInfo); - }; - - // The lexer needs a syntax.square value to decide how to handle `[`. - // Glimmer uses the default 'string' mode (bracket-escaped identifiers). - parser.yy.syntax = { - square: 'string', - hash: hashLiteralNode, - }; - - return parser.parse(input); -} - -function hashLiteralNode(hash, loc) { - return { - type: 'HashLiteral', - pairs: hash.pairs, - loc, - }; + return rdParse(input, options); } export function parse(input, options) { diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parser.js b/packages/@glimmer/syntax/lib/hbs-parser/parser.js deleted file mode 100644 index 136e73cc256..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/parser.js +++ /dev/null @@ -1,2032 +0,0 @@ -// @ts-nocheck -/* parser generated by jison 0.4.18 */ -/* - Returns a Parser object of the following structure: - - Parser: { - yy: {} - } - - Parser.prototype: { - yy: {}, - trace: function(), - symbols_: {associative list: name ==> number}, - terminals_: {associative list: number ==> name}, - productions_: [...], - performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$), - table: [...], - defaultActions: {...}, - parseError: function(str, hash), - parse: function(input), - - lexer: { - EOF: 1, - parseError: function(str, hash), - setInput: function(input), - input: function(), - unput: function(str), - more: function(), - less: function(n), - pastInput: function(), - upcomingInput: function(), - showPosition: function(), - test_match: function(regex_match_array, rule_index), - next: function(), - lex: function(), - begin: function(condition), - popState: function(), - _currentRules: function(), - topState: function(), - pushState: function(condition), - - options: { - ranges: boolean (optional: true ==> token location info will include a .range[] member) - flex: boolean (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match) - backtrack_lexer: boolean (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code) - }, - - performAction: function(yy, yy_, $avoiding_name_collisions, YY_START), - rules: [...], - conditions: {associative list: name ==> set}, - } - } - - - token location info (@$, _$, etc.): { - first_line: n, - last_line: n, - first_column: n, - last_column: n, - range: [start_number, end_number] (where the numbers are indexes into the input string, regular zero-based) - } - - - the parseError function receives a 'hash' object with these members for lexer and parser errors: { - text: (matched text) - token: (the produced terminal token, if any) - line: (yylineno) - } - while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: { - loc: (yylloc) - expected: (string describing the set of expected tokens) - recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error) - } -*/ -var parser = (function () { - var o = function (k, v, o, l) { - for (o = o || {}, l = k.length; l--; o[k[l]] = v); - return o; - }, - $V0 = [2, 52], - $V1 = [1, 20], - $V2 = [5, 14, 15, 19, 29, 34, 39, 44, 47, 48, 53, 57, 61], - $V3 = [1, 44], - $V4 = [1, 40], - $V5 = [1, 43], - $V6 = [1, 33], - $V7 = [1, 34], - $V8 = [1, 35], - $V9 = [1, 36], - $Va = [1, 37], - $Vb = [1, 42], - $Vc = [1, 46], - $Vd = [14, 15, 19, 29, 34, 39, 44, 47, 48, 53, 57, 61], - $Ve = [14, 15, 19, 29, 34, 44, 47, 48, 53, 57, 61], - $Vf = [15, 18], - $Vg = [14, 15, 19, 29, 34, 47, 48, 53, 57, 61], - $Vh = [33, 67, 73, 75, 84, 85, 86, 87, 88, 89], - $Vi = [23, 33, 56, 67, 68, 73, 75, 77, 79, 84, 85, 86, 87, 88, 89], - $Vj = [1, 62], - $Vk = [1, 63], - $Vl = [23, 33, 56, 68, 73, 79], - $Vm = [23, 33, 56, 67, 68, 73, 75, 77, 79, 84, 85, 86, 87, 88, 89, 92, 93], - $Vn = [2, 51], - $Vo = [1, 64], - $Vp = [67, 73, 75, 77, 84, 85, 86, 87, 88, 89], - $Vq = [56, 67, 73, 75, 84, 85, 86, 87, 88, 89], - $Vr = [1, 75], - $Vs = [1, 76], - $Vt = [1, 83], - $Vu = [33, 67, 73, 75, 79, 84, 85, 86, 87, 88, 89], - $Vv = [23, 67, 73, 75, 84, 85, 86, 87, 88, 89], - $Vw = [67, 68, 73, 75, 84, 85, 86, 87, 88, 89], - $Vx = [33, 79], - $Vy = [1, 134], - $Vz = [73, 81]; - var parser = { - trace: function trace() {}, - yy: {}, - symbols_: { - error: 2, - root: 3, - program: 4, - EOF: 5, - program_repetition0: 6, - statement: 7, - mustache: 8, - block: 9, - rawBlock: 10, - partial: 11, - partialBlock: 12, - content: 13, - COMMENT: 14, - CONTENT: 15, - openRawBlock: 16, - rawBlock_repetition0: 17, - END_RAW_BLOCK: 18, - OPEN_RAW_BLOCK: 19, - helperName: 20, - openRawBlock_repetition0: 21, - openRawBlock_option0: 22, - CLOSE_RAW_BLOCK: 23, - openBlock: 24, - block_option0: 25, - closeBlock: 26, - openInverse: 27, - block_option1: 28, - OPEN_BLOCK: 29, - openBlock_repetition0: 30, - openBlock_option0: 31, - openBlock_option1: 32, - CLOSE: 33, - OPEN_INVERSE: 34, - openInverse_repetition0: 35, - openInverse_option0: 36, - openInverse_option1: 37, - openInverseChain: 38, - OPEN_INVERSE_CHAIN: 39, - openInverseChain_repetition0: 40, - openInverseChain_option0: 41, - openInverseChain_option1: 42, - inverseAndProgram: 43, - INVERSE: 44, - inverseChain: 45, - inverseChain_option0: 46, - OPEN_ENDBLOCK: 47, - OPEN: 48, - hash: 49, - expr: 50, - mustache_repetition0: 51, - mustache_option0: 52, - OPEN_UNESCAPED: 53, - mustache_repetition1: 54, - mustache_option1: 55, - CLOSE_UNESCAPED: 56, - OPEN_PARTIAL: 57, - partial_repetition0: 58, - partial_option0: 59, - openPartialBlock: 60, - OPEN_PARTIAL_BLOCK: 61, - openPartialBlock_repetition0: 62, - openPartialBlock_option0: 63, - exprHead: 64, - arrayLiteral: 65, - sexpr: 66, - OPEN_SEXPR: 67, - CLOSE_SEXPR: 68, - sexpr_repetition0: 69, - sexpr_option0: 70, - hash_repetition_plus0: 71, - hashSegment: 72, - ID: 73, - EQUALS: 74, - OPEN_ARRAY: 75, - arrayLiteral_repetition0: 76, - CLOSE_ARRAY: 77, - blockParams: 78, - OPEN_BLOCK_PARAMS: 79, - blockParams_repetition_plus0: 80, - CLOSE_BLOCK_PARAMS: 81, - path: 82, - dataName: 83, - STRING: 84, - NUMBER: 85, - BOOLEAN: 86, - UNDEFINED: 87, - NULL: 88, - DATA: 89, - pathSegments: 90, - sep: 91, - SEP: 92, - PRIVATE_SEP: 93, - $accept: 0, - $end: 1, - }, - terminals_: { - 2: 'error', - 5: 'EOF', - 14: 'COMMENT', - 15: 'CONTENT', - 18: 'END_RAW_BLOCK', - 19: 'OPEN_RAW_BLOCK', - 23: 'CLOSE_RAW_BLOCK', - 29: 'OPEN_BLOCK', - 33: 'CLOSE', - 34: 'OPEN_INVERSE', - 39: 'OPEN_INVERSE_CHAIN', - 44: 'INVERSE', - 47: 'OPEN_ENDBLOCK', - 48: 'OPEN', - 53: 'OPEN_UNESCAPED', - 56: 'CLOSE_UNESCAPED', - 57: 'OPEN_PARTIAL', - 61: 'OPEN_PARTIAL_BLOCK', - 67: 'OPEN_SEXPR', - 68: 'CLOSE_SEXPR', - 73: 'ID', - 74: 'EQUALS', - 75: 'OPEN_ARRAY', - 77: 'CLOSE_ARRAY', - 79: 'OPEN_BLOCK_PARAMS', - 81: 'CLOSE_BLOCK_PARAMS', - 84: 'STRING', - 85: 'NUMBER', - 86: 'BOOLEAN', - 87: 'UNDEFINED', - 88: 'NULL', - 89: 'DATA', - 92: 'SEP', - 93: 'PRIVATE_SEP', - }, - productions_: [ - 0, - [3, 2], - [4, 1], - [7, 1], - [7, 1], - [7, 1], - [7, 1], - [7, 1], - [7, 1], - [7, 1], - [13, 1], - [10, 3], - [16, 5], - [9, 4], - [9, 4], - [24, 6], - [27, 6], - [38, 6], - [43, 2], - [45, 3], - [45, 1], - [26, 3], - [8, 3], - [8, 5], - [8, 5], - [11, 5], - [12, 3], - [60, 5], - [50, 1], - [50, 1], - [64, 1], - [64, 1], - [66, 3], - [66, 5], - [49, 1], - [72, 3], - [65, 3], - [78, 3], - [20, 1], - [20, 1], - [20, 1], - [20, 1], - [20, 1], - [20, 1], - [20, 1], - [83, 2], - [91, 1], - [91, 1], - [82, 3], - [82, 1], - [90, 3], - [90, 1], - [6, 0], - [6, 2], - [17, 0], - [17, 2], - [21, 0], - [21, 2], - [22, 0], - [22, 1], - [25, 0], - [25, 1], - [28, 0], - [28, 1], - [30, 0], - [30, 2], - [31, 0], - [31, 1], - [32, 0], - [32, 1], - [35, 0], - [35, 2], - [36, 0], - [36, 1], - [37, 0], - [37, 1], - [40, 0], - [40, 2], - [41, 0], - [41, 1], - [42, 0], - [42, 1], - [46, 0], - [46, 1], - [51, 0], - [51, 2], - [52, 0], - [52, 1], - [54, 0], - [54, 2], - [55, 0], - [55, 1], - [58, 0], - [58, 2], - [59, 0], - [59, 1], - [62, 0], - [62, 2], - [63, 0], - [63, 1], - [69, 0], - [69, 2], - [70, 0], - [70, 1], - [71, 1], - [71, 2], - [76, 0], - [76, 2], - [80, 1], - [80, 2], - ], - performAction: function anonymous( - yytext, - yyleng, - yylineno, - yy, - yystate /* action[1] */, - $$ /* vstack */, - _$ /* lstack */ - ) { - /* this == yyval */ - - var $0 = $$.length - 1; - switch (yystate) { - case 1: - return $$[$0 - 1]; - break; - case 2: - this.$ = yy.prepareProgram($$[$0]); - break; - case 3: - case 4: - case 5: - case 6: - case 7: - case 8: - case 20: - case 28: - case 29: - case 30: - case 31: - case 38: - case 39: - case 46: - case 47: - this.$ = $$[$0]; - break; - case 9: - this.$ = { - type: 'CommentStatement', - value: yy.stripComment($$[$0]), - strip: yy.stripFlags($$[$0], $$[$0]), - loc: yy.locInfo(this._$), - }; - - break; - case 10: - this.$ = { - type: 'ContentStatement', - original: $$[$0], - value: $$[$0], - loc: yy.locInfo(this._$), - }; - - break; - case 11: - this.$ = yy.prepareRawBlock($$[$0 - 2], $$[$0 - 1], $$[$0], this._$); - break; - case 12: - this.$ = { path: $$[$0 - 3], params: $$[$0 - 2], hash: $$[$0 - 1] }; - break; - case 13: - this.$ = yy.prepareBlock($$[$0 - 3], $$[$0 - 2], $$[$0 - 1], $$[$0], false, this._$); - break; - case 14: - this.$ = yy.prepareBlock($$[$0 - 3], $$[$0 - 2], $$[$0 - 1], $$[$0], true, this._$); - break; - case 15: - this.$ = { - open: $$[$0 - 5], - path: $$[$0 - 4], - params: $$[$0 - 3], - hash: $$[$0 - 2], - blockParams: $$[$0 - 1], - strip: yy.stripFlags($$[$0 - 5], $$[$0]), - }; - break; - case 16: - case 17: - this.$ = { - path: $$[$0 - 4], - params: $$[$0 - 3], - hash: $$[$0 - 2], - blockParams: $$[$0 - 1], - strip: yy.stripFlags($$[$0 - 5], $$[$0]), - }; - break; - case 18: - this.$ = { strip: yy.stripFlags($$[$0 - 1], $$[$0 - 1]), program: $$[$0] }; - break; - case 19: - var inverse = yy.prepareBlock($$[$0 - 2], $$[$0 - 1], $$[$0], $$[$0], false, this._$), - program = yy.prepareProgram([inverse], $$[$0 - 1].loc); - program.chained = true; - - this.$ = { strip: $$[$0 - 2].strip, program: program, chain: true }; - - break; - case 21: - this.$ = { path: $$[$0 - 1], strip: yy.stripFlags($$[$0 - 2], $$[$0]) }; - break; - case 22: - this.$ = yy.prepareMustache( - yy.syntax.hash($$[$0 - 1], yy.locInfo(this._$), { yy, syntax: 'expr' }), - [], - undefined, - $$[$0 - 2], - yy.stripFlags($$[$0 - 2], $$[$0]), - this._$ - ); - break; - case 23: - case 24: - this.$ = yy.prepareMustache( - $$[$0 - 3], - $$[$0 - 2], - $$[$0 - 1], - $$[$0 - 4], - yy.stripFlags($$[$0 - 4], $$[$0]), - this._$ - ); - break; - case 25: - this.$ = { - type: 'PartialStatement', - name: $$[$0 - 3], - params: $$[$0 - 2], - hash: $$[$0 - 1], - indent: '', - strip: yy.stripFlags($$[$0 - 4], $$[$0]), - loc: yy.locInfo(this._$), - }; - - break; - case 26: - this.$ = yy.preparePartialBlock($$[$0 - 2], $$[$0 - 1], $$[$0], this._$); - break; - case 27: - this.$ = { - path: $$[$0 - 3], - params: $$[$0 - 2], - hash: $$[$0 - 1], - strip: yy.stripFlags($$[$0 - 4], $$[$0]), - }; - break; - case 32: - this.$ = yy.syntax.hash($$[$0 - 1], yy.locInfo(this._$), { yy, syntax: 'expr' }); - break; - case 33: - this.$ = { - type: 'SubExpression', - path: $$[$0 - 3], - params: $$[$0 - 2], - hash: $$[$0 - 1], - loc: yy.locInfo(this._$), - }; - - break; - case 34: - this.$ = { type: 'Hash', pairs: $$[$0], loc: yy.locInfo(this._$) }; - break; - case 35: - this.$ = { - type: 'HashPair', - key: yy.id($$[$0 - 2]), - value: $$[$0], - loc: yy.locInfo(this._$), - }; - break; - case 36: - this.$ = yy.syntax.square($$[$0 - 1], yy.locInfo(this._$), { yy, syntax: 'expr' }); - break; - case 37: - this.$ = yy.id($$[$0 - 1]); - break; - case 40: - this.$ = { - type: 'StringLiteral', - value: $$[$0], - original: $$[$0], - loc: yy.locInfo(this._$), - }; - break; - case 41: - this.$ = { - type: 'NumberLiteral', - value: Number($$[$0]), - original: Number($$[$0]), - loc: yy.locInfo(this._$), - }; - break; - case 42: - this.$ = { - type: 'BooleanLiteral', - value: $$[$0] === 'true', - original: $$[$0] === 'true', - loc: yy.locInfo(this._$), - }; - break; - case 43: - this.$ = { - type: 'UndefinedLiteral', - original: undefined, - value: undefined, - loc: yy.locInfo(this._$), - }; - break; - case 44: - this.$ = { type: 'NullLiteral', original: null, value: null, loc: yy.locInfo(this._$) }; - break; - case 45: - this.$ = yy.preparePath(true, false, $$[$0], this._$); - break; - case 48: - this.$ = yy.preparePath(false, $$[$0 - 2], $$[$0], this._$); - break; - case 49: - this.$ = yy.preparePath(false, false, $$[$0], this._$); - break; - case 50: - $$[$0 - 2].push({ part: yy.id($$[$0]), original: $$[$0], separator: $$[$0 - 1] }); - this.$ = $$[$0 - 2]; - break; - case 51: - this.$ = [{ part: yy.id($$[$0]), original: $$[$0] }]; - break; - case 52: - case 54: - case 56: - case 64: - case 70: - case 76: - case 84: - case 88: - case 92: - case 96: - case 100: - case 106: - this.$ = []; - break; - case 53: - case 55: - case 57: - case 65: - case 71: - case 77: - case 85: - case 89: - case 93: - case 97: - case 101: - case 105: - case 107: - case 109: - $$[$0 - 1].push($$[$0]); - break; - case 104: - case 108: - this.$ = [$$[$0]]; - break; - } - }, - table: [ - o([5, 14, 15, 19, 29, 34, 48, 53, 57, 61], $V0, { 3: 1, 4: 2, 6: 3 }), - { 1: [3] }, - { 5: [1, 4] }, - o([5, 39, 44, 47], [2, 2], { - 7: 5, - 8: 6, - 9: 7, - 10: 8, - 11: 9, - 12: 10, - 13: 11, - 24: 15, - 27: 16, - 16: 17, - 60: 19, - 14: [1, 12], - 15: $V1, - 19: [1, 23], - 29: [1, 21], - 34: [1, 22], - 48: [1, 13], - 53: [1, 14], - 57: [1, 18], - 61: [1, 24], - }), - { 1: [2, 1] }, - o($V2, [2, 53]), - o($V2, [2, 3]), - o($V2, [2, 4]), - o($V2, [2, 5]), - o($V2, [2, 6]), - o($V2, [2, 7]), - o($V2, [2, 8]), - o($V2, [2, 9]), - { - 20: 28, - 49: 25, - 50: 26, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { - 20: 28, - 50: 45, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($Vd, $V0, { 6: 3, 4: 47 }), - o($Ve, $V0, { 6: 3, 4: 48 }), - o($Vf, [2, 54], { 17: 49 }), - { - 20: 28, - 50: 50, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($Vg, $V0, { 6: 3, 4: 51 }), - o([5, 14, 15, 18, 19, 29, 34, 39, 44, 47, 48, 53, 57, 61], [2, 10]), - { - 20: 52, - 64: 53, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { - 20: 54, - 64: 53, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { - 20: 55, - 64: 53, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { - 20: 28, - 50: 56, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { 33: [1, 57] }, - o($Vh, [2, 84], { 51: 58 }), - o([23, 33, 56, 68, 79], [2, 34], { 72: 59, 73: [1, 60] }), - o($Vi, [2, 28]), - o($Vi, [2, 29], { 91: 61, 92: $Vj, 93: $Vk }), - o($Vl, [2, 104]), - o($Vi, [2, 38]), - o($Vi, [2, 39]), - o($Vi, [2, 40]), - o($Vi, [2, 41]), - o($Vi, [2, 42]), - o($Vi, [2, 43]), - o($Vi, [2, 44]), - o($Vm, [2, 30]), - o($Vm, [2, 31]), - o([23, 33, 56, 67, 68, 73, 75, 79, 84, 85, 86, 87, 88, 89, 92, 93], $Vn, { 74: $Vo }), - o($Vi, [2, 49], { 91: 65, 92: $Vj, 93: $Vk }), - { 73: $Vc, 90: 66 }, - o($Vp, [2, 106], { 76: 67 }), - { - 20: 28, - 49: 68, - 50: 69, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($Vq, [2, 88], { 54: 70 }), - o($Vm, $Vn), - { 25: 71, 38: 73, 39: $Vr, 43: 74, 44: $Vs, 45: 72, 47: [2, 60] }, - { 28: 77, 43: 78, 44: $Vs, 47: [2, 62] }, - { 13: 80, 15: $V1, 18: [1, 79] }, - o($Vh, [2, 92], { 58: 81 }), - { 26: 82, 47: $Vt }, - o($Vu, [2, 64], { 30: 84 }), - { 91: 61, 92: $Vj, 93: $Vk }, - o($Vu, [2, 70], { 35: 85 }), - o($Vv, [2, 56], { 21: 86 }), - o($Vh, [2, 96], { 62: 87 }), - o($V2, [2, 22]), - { - 20: 28, - 33: [2, 86], - 49: 90, - 50: 89, - 52: 88, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($Vl, [2, 105]), - { 74: $Vo }, - { 73: $Vc, 90: 91 }, - { 73: [2, 46] }, - { 73: [2, 47] }, - { - 20: 28, - 50: 92, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { 73: [1, 93] }, - o($Vi, [2, 45], { 91: 65, 92: $Vj, 93: $Vk }), - { - 20: 28, - 50: 95, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 77: [1, 94], - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { 68: [1, 96] }, - o($Vw, [2, 100], { 69: 97 }), - { - 20: 28, - 49: 100, - 50: 99, - 55: 98, - 56: [2, 90], - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { 26: 101, 47: $Vt }, - { 47: [2, 61] }, - o($Vd, $V0, { 6: 3, 4: 102 }), - { 47: [2, 20] }, - { - 20: 103, - 64: 53, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($Vg, $V0, { 6: 3, 4: 104 }), - { 26: 105, 47: $Vt }, - { 47: [2, 63] }, - o($V2, [2, 11]), - o($Vf, [2, 55]), - { - 20: 28, - 33: [2, 94], - 49: 108, - 50: 107, - 59: 106, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($V2, [2, 26]), - { - 20: 109, - 64: 53, - 65: 38, - 66: 39, - 67: $V3, - 73: $Vc, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - o($Vx, [2, 66], { - 71: 27, - 20: 28, - 64: 29, - 72: 30, - 82: 31, - 83: 32, - 65: 38, - 66: 39, - 90: 41, - 31: 110, - 50: 111, - 49: 112, - 67: $V3, - 73: $V4, - 75: $V5, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - }), - o($Vx, [2, 72], { - 71: 27, - 20: 28, - 64: 29, - 72: 30, - 82: 31, - 83: 32, - 65: 38, - 66: 39, - 90: 41, - 36: 113, - 50: 114, - 49: 115, - 67: $V3, - 73: $V4, - 75: $V5, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - }), - { - 20: 28, - 22: 116, - 23: [2, 58], - 49: 118, - 50: 117, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { - 20: 28, - 33: [2, 98], - 49: 121, - 50: 120, - 63: 119, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { 33: [1, 122] }, - o($Vh, [2, 85]), - { 33: [2, 87] }, - o($Vi, [2, 48], { 91: 65, 92: $Vj, 93: $Vk }), - o($Vl, [2, 35]), - o($Vm, [2, 50]), - o($Vm, [2, 36]), - o($Vp, [2, 107]), - o($Vm, [2, 32]), - { - 20: 28, - 49: 125, - 50: 124, - 64: 29, - 65: 38, - 66: 39, - 67: $V3, - 68: [2, 102], - 70: 123, - 71: 27, - 72: 30, - 73: $V4, - 75: $V5, - 82: 31, - 83: 32, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - 90: 41, - }, - { 56: [1, 126] }, - o($Vq, [2, 89]), - { 56: [2, 91] }, - o($V2, [2, 13]), - { 38: 73, 39: $Vr, 43: 74, 44: $Vs, 45: 128, 46: 127, 47: [2, 82] }, - o($Vu, [2, 76], { 40: 129 }), - { 47: [2, 18] }, - o($V2, [2, 14]), - { 33: [1, 130] }, - o($Vh, [2, 93]), - { 33: [2, 95] }, - { 33: [1, 131] }, - { 32: 132, 33: [2, 68], 78: 133, 79: $Vy }, - o($Vu, [2, 65]), - o($Vx, [2, 67]), - { 33: [2, 74], 37: 135, 78: 136, 79: $Vy }, - o($Vu, [2, 71]), - o($Vx, [2, 73]), - { 23: [1, 137] }, - o($Vv, [2, 57]), - { 23: [2, 59] }, - { 33: [1, 138] }, - o($Vh, [2, 97]), - { 33: [2, 99] }, - o($V2, [2, 23]), - { 68: [1, 139] }, - o($Vw, [2, 101]), - { 68: [2, 103] }, - o($V2, [2, 24]), - { 47: [2, 19] }, - { 47: [2, 83] }, - o($Vx, [2, 78], { - 71: 27, - 20: 28, - 64: 29, - 72: 30, - 82: 31, - 83: 32, - 65: 38, - 66: 39, - 90: 41, - 41: 140, - 50: 141, - 49: 142, - 67: $V3, - 73: $V4, - 75: $V5, - 84: $V6, - 85: $V7, - 86: $V8, - 87: $V9, - 88: $Va, - 89: $Vb, - }), - o($V2, [2, 25]), - o($V2, [2, 21]), - { 33: [1, 143] }, - { 33: [2, 69] }, - { 73: [1, 145], 80: 144 }, - { 33: [1, 146] }, - { 33: [2, 75] }, - o($Vf, [2, 12]), - o($Vg, [2, 27]), - o($Vm, [2, 33]), - { 33: [2, 80], 42: 147, 78: 148, 79: $Vy }, - o($Vu, [2, 77]), - o($Vx, [2, 79]), - o($Vd, [2, 15]), - { 73: [1, 150], 81: [1, 149] }, - o($Vz, [2, 108]), - o($Ve, [2, 16]), - { 33: [1, 151] }, - { 33: [2, 81] }, - { 33: [2, 37] }, - o($Vz, [2, 109]), - o($Vd, [2, 17]), - ], - defaultActions: { - 4: [2, 1], - 62: [2, 46], - 63: [2, 47], - 72: [2, 61], - 74: [2, 20], - 78: [2, 63], - 90: [2, 87], - 100: [2, 91], - 104: [2, 18], - 108: [2, 95], - 118: [2, 59], - 121: [2, 99], - 125: [2, 103], - 127: [2, 19], - 128: [2, 83], - 133: [2, 69], - 136: [2, 75], - 148: [2, 81], - 149: [2, 37], - }, - parseError: function parseError(str, hash) { - if (hash.recoverable) { - this.trace(str); - } else { - var error = new Error(str); - error.hash = hash; - throw error; - } - }, - parse: function parse(input) { - var self = this, - stack = [0], - tstack = [], - vstack = [null], - lstack = [], - table = this.table, - yytext = '', - yylineno = 0, - yyleng = 0, - recovering = 0, - TERROR = 2, - EOF = 1; - var args = lstack.slice.call(arguments, 1); - var lexer = Object.create(this.lexer); - var sharedState = { yy: {} }; - for (var k in this.yy) { - if (Object.prototype.hasOwnProperty.call(this.yy, k)) { - sharedState.yy[k] = this.yy[k]; - } - } - lexer.setInput(input, sharedState.yy); - sharedState.yy.lexer = lexer; - sharedState.yy.parser = this; - if (typeof lexer.yylloc == 'undefined') { - lexer.yylloc = {}; - } - var yyloc = lexer.yylloc; - lstack.push(yyloc); - var ranges = lexer.options && lexer.options.ranges; - if (typeof sharedState.yy.parseError === 'function') { - this.parseError = sharedState.yy.parseError; - } else { - this.parseError = Object.getPrototypeOf(this).parseError; - } - function popStack(n) { - stack.length = stack.length - 2 * n; - vstack.length = vstack.length - n; - lstack.length = lstack.length - n; - } - _token_stack: var lex = function () { - var token; - token = lexer.lex() || EOF; - if (typeof token !== 'number') { - token = self.symbols_[token] || token; - } - return token; - }; - var symbol, - preErrorSymbol, - state, - action, - a, - r, - yyval = {}, - p, - len, - newState, - expected; - while (true) { - state = stack[stack.length - 1]; - if (this.defaultActions[state]) { - action = this.defaultActions[state]; - } else { - if (symbol === null || typeof symbol == 'undefined') { - symbol = lex(); - } - action = table[state] && table[state][symbol]; - } - if (typeof action === 'undefined' || !action.length || !action[0]) { - var errStr = ''; - expected = []; - for (p in table[state]) { - if (this.terminals_[p] && p > TERROR) { - expected.push("'" + this.terminals_[p] + "'"); - } - } - if (lexer.showPosition) { - errStr = - 'Parse error on line ' + - (yylineno + 1) + - ':\n' + - lexer.showPosition() + - '\nExpecting ' + - expected.join(', ') + - ", got '" + - (this.terminals_[symbol] || symbol) + - "'"; - } else { - errStr = - 'Parse error on line ' + - (yylineno + 1) + - ': Unexpected ' + - (symbol == EOF ? 'end of input' : "'" + (this.terminals_[symbol] || symbol) + "'"); - } - this.parseError(errStr, { - text: lexer.match, - token: this.terminals_[symbol] || symbol, - line: lexer.yylineno, - loc: yyloc, - expected: expected, - }); - } - if (action[0] instanceof Array && action.length > 1) { - throw new Error( - 'Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol - ); - } - switch (action[0]) { - case 1: - stack.push(symbol); - vstack.push(lexer.yytext); - lstack.push(lexer.yylloc); - stack.push(action[1]); - symbol = null; - if (!preErrorSymbol) { - yyleng = lexer.yyleng; - yytext = lexer.yytext; - yylineno = lexer.yylineno; - yyloc = lexer.yylloc; - if (recovering > 0) { - recovering--; - } - } else { - symbol = preErrorSymbol; - preErrorSymbol = null; - } - break; - case 2: - len = this.productions_[action[1]][1]; - yyval.$ = vstack[vstack.length - len]; - yyval._$ = { - first_line: lstack[lstack.length - (len || 1)].first_line, - last_line: lstack[lstack.length - 1].last_line, - first_column: lstack[lstack.length - (len || 1)].first_column, - last_column: lstack[lstack.length - 1].last_column, - }; - if (ranges) { - yyval._$.range = [ - lstack[lstack.length - (len || 1)].range[0], - lstack[lstack.length - 1].range[1], - ]; - } - r = this.performAction.apply( - yyval, - [yytext, yyleng, yylineno, sharedState.yy, action[1], vstack, lstack].concat(args) - ); - if (typeof r !== 'undefined') { - return r; - } - if (len) { - stack = stack.slice(0, -1 * len * 2); - vstack = vstack.slice(0, -1 * len); - lstack = lstack.slice(0, -1 * len); - } - stack.push(this.productions_[action[1]][0]); - vstack.push(yyval.$); - lstack.push(yyval._$); - newState = table[stack[stack.length - 2]][stack[stack.length - 1]]; - stack.push(newState); - break; - case 3: - return true; - } - } - return true; - }, - }; - /* generated by jison-lex 0.3.4 */ - var lexer = (function () { - var lexer = { - EOF: 1, - - parseError: function parseError(str, hash) { - if (this.yy.parser) { - this.yy.parser.parseError(str, hash); - } else { - throw new Error(str); - } - }, - - // resets the lexer, sets new input - setInput: function (input, yy) { - this.yy = yy || this.yy || {}; - this._input = input; - this._more = this._backtrack = this.done = false; - this.yylineno = this.yyleng = 0; - this.yytext = this.matched = this.match = ''; - this.conditionStack = ['INITIAL']; - this.yylloc = { - first_line: 1, - first_column: 0, - last_line: 1, - last_column: 0, - }; - if (this.options.ranges) { - this.yylloc.range = [0, 0]; - } - this.offset = 0; - return this; - }, - - // consumes and returns one char from the input - input: function () { - var ch = this._input[0]; - this.yytext += ch; - this.yyleng++; - this.offset++; - this.match += ch; - this.matched += ch; - var lines = ch.match(/(?:\r\n?|\n).*/g); - if (lines) { - this.yylineno++; - this.yylloc.last_line++; - } else { - this.yylloc.last_column++; - } - if (this.options.ranges) { - this.yylloc.range[1]++; - } - - this._input = this._input.slice(1); - return ch; - }, - - // unshifts one char (or a string) into the input - unput: function (ch) { - var len = ch.length; - var lines = ch.split(/(?:\r\n?|\n)/g); - - this._input = ch + this._input; - this.yytext = this.yytext.substr(0, this.yytext.length - len); - //this.yyleng -= len; - this.offset -= len; - var oldLines = this.match.split(/(?:\r\n?|\n)/g); - this.match = this.match.substr(0, this.match.length - 1); - this.matched = this.matched.substr(0, this.matched.length - 1); - - if (lines.length - 1) { - this.yylineno -= lines.length - 1; - } - var r = this.yylloc.range; - - this.yylloc = { - first_line: this.yylloc.first_line, - last_line: this.yylineno + 1, - first_column: this.yylloc.first_column, - last_column: lines - ? (lines.length === oldLines.length ? this.yylloc.first_column : 0) + - oldLines[oldLines.length - lines.length].length - - lines[0].length - : this.yylloc.first_column - len, - }; - - if (this.options.ranges) { - this.yylloc.range = [r[0], r[0] + this.yyleng - len]; - } - this.yyleng = this.yytext.length; - return this; - }, - - // When called from action, caches matched text and appends it on next action - more: function () { - this._more = true; - return this; - }, - - // When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead. - reject: function () { - if (this.options.backtrack_lexer) { - this._backtrack = true; - } else { - return this.parseError( - 'Lexical error on line ' + - (this.yylineno + 1) + - '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + - this.showPosition(), - { - text: '', - token: null, - line: this.yylineno, - } - ); - } - return this; - }, - - // retain first n characters of the match - less: function (n) { - this.unput(this.match.slice(n)); - }, - - // displays already matched input, i.e. for error messages - pastInput: function () { - var past = this.matched.substr(0, this.matched.length - this.match.length); - return (past.length > 20 ? '...' : '') + past.substr(-20).replace(/\n/g, ''); - }, - - // displays upcoming input, i.e. for error messages - upcomingInput: function () { - var next = this.match; - if (next.length < 20) { - next += this._input.substr(0, 20 - next.length); - } - return (next.substr(0, 20) + (next.length > 20 ? '...' : '')).replace(/\n/g, ''); - }, - - // displays the character position where the lexing error occurred, i.e. for error messages - showPosition: function () { - var pre = this.pastInput(); - var c = new Array(pre.length + 1).join('-'); - return pre + this.upcomingInput() + '\n' + c + '^'; - }, - - // test the lexed token: return FALSE when not a match, otherwise return token - test_match: function (match, indexed_rule) { - var token, lines, backup; - - if (this.options.backtrack_lexer) { - // save context - backup = { - yylineno: this.yylineno, - yylloc: { - first_line: this.yylloc.first_line, - last_line: this.last_line, - first_column: this.yylloc.first_column, - last_column: this.yylloc.last_column, - }, - yytext: this.yytext, - match: this.match, - matches: this.matches, - matched: this.matched, - yyleng: this.yyleng, - offset: this.offset, - _more: this._more, - _input: this._input, - yy: this.yy, - conditionStack: this.conditionStack.slice(0), - done: this.done, - }; - if (this.options.ranges) { - backup.yylloc.range = this.yylloc.range.slice(0); - } - } - - lines = match[0].match(/(?:\r\n?|\n).*/g); - if (lines) { - this.yylineno += lines.length; - } - this.yylloc = { - first_line: this.yylloc.last_line, - last_line: this.yylineno + 1, - first_column: this.yylloc.last_column, - last_column: lines - ? lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length - : this.yylloc.last_column + match[0].length, - }; - this.yytext += match[0]; - this.match += match[0]; - this.matches = match; - this.yyleng = this.yytext.length; - if (this.options.ranges) { - this.yylloc.range = [this.offset, (this.offset += this.yyleng)]; - } - this._more = false; - this._backtrack = false; - this._input = this._input.slice(match[0].length); - this.matched += match[0]; - token = this.performAction.call( - this, - this.yy, - this, - indexed_rule, - this.conditionStack[this.conditionStack.length - 1] - ); - if (this.done && this._input) { - this.done = false; - } - if (token) { - return token; - } else if (this._backtrack) { - // recover context - for (var k in backup) { - this[k] = backup[k]; - } - return false; // rule action called reject() implying the next rule should be tested instead. - } - return false; - }, - - // return next match in input - next: function () { - if (this.done) { - return this.EOF; - } - if (!this._input) { - this.done = true; - } - - var token, match, tempMatch, index; - if (!this._more) { - this.yytext = ''; - this.match = ''; - } - var rules = this._currentRules(); - for (var i = 0; i < rules.length; i++) { - tempMatch = this._input.match(this.rules[rules[i]]); - if (tempMatch && (!match || tempMatch[0].length > match[0].length)) { - match = tempMatch; - index = i; - if (this.options.backtrack_lexer) { - token = this.test_match(tempMatch, rules[i]); - if (token !== false) { - return token; - } else if (this._backtrack) { - match = false; - continue; // rule action called reject() implying a rule MISmatch. - } else { - // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace) - return false; - } - } else if (!this.options.flex) { - break; - } - } - } - if (match) { - token = this.test_match(match, rules[index]); - if (token !== false) { - return token; - } - // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace) - return false; - } - if (this._input === '') { - return this.EOF; - } else { - return this.parseError( - 'Lexical error on line ' + - (this.yylineno + 1) + - '. Unrecognized text.\n' + - this.showPosition(), - { - text: '', - token: null, - line: this.yylineno, - } - ); - } - }, - - // return next match that has a token - lex: function lex() { - var r = this.next(); - if (r) { - return r; - } else { - return this.lex(); - } - }, - - // activates a new lexer condition state (pushes the new lexer condition state onto the condition stack) - begin: function begin(condition) { - this.conditionStack.push(condition); - }, - - // pop the previously active lexer condition state off the condition stack - popState: function popState() { - var n = this.conditionStack.length - 1; - if (n > 0) { - return this.conditionStack.pop(); - } else { - return this.conditionStack[0]; - } - }, - - // produce the lexer rule set which is active for the currently active lexer condition state - _currentRules: function _currentRules() { - if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) { - return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules; - } else { - return this.conditions['INITIAL'].rules; - } - }, - - // return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available - topState: function topState(n) { - n = this.conditionStack.length - 1 - Math.abs(n || 0); - if (n >= 0) { - return this.conditionStack[n]; - } else { - return 'INITIAL'; - } - }, - - // alias for begin(condition) - pushState: function pushState(condition) { - this.begin(condition); - }, - - // return the number of states currently on the stack - stateStackSize: function stateStackSize() { - return this.conditionStack.length; - }, - options: {}, - performAction: function anonymous(yy, yy_, $avoiding_name_collisions, YY_START) { - function strip(start, end) { - return (yy_.yytext = yy_.yytext.substring(start, yy_.yyleng - end + start)); - } - - var YYSTATE = YY_START; - switch ($avoiding_name_collisions) { - case 0: - if (yy_.yytext.slice(-2) === '\\\\') { - strip(0, 1); - this.begin('mu'); - } else if (yy_.yytext.slice(-1) === '\\') { - strip(0, 1); - this.begin('emu'); - } else { - this.begin('mu'); - } - if (yy_.yytext) return 15; - - break; - case 1: - return 15; - break; - case 2: - this.popState(); - return 15; - - break; - case 3: - this.begin('raw'); - return 15; - break; - case 4: - this.popState(); - // Should be using `this.topState()` below, but it currently - // returns the second top instead of the first top. Opened an - // issue about it at https://github.com/zaach/jison/issues/291 - if (this.conditionStack[this.conditionStack.length - 1] === 'raw') { - return 15; - } else { - strip(5, 9); - return 18; - } - - break; - case 5: - return 15; - break; - case 6: - this.popState(); - return 14; - - break; - case 7: - return 67; - break; - case 8: - return 68; - break; - case 9: - if (yy.syntax.square === 'string') { - this.unput(yy_.yytext); - // escaped literal - this.begin('escl'); - } else { - return 75; - } - - break; - case 10: - return 77; - break; - case 11: - return 19; - break; - case 12: - this.popState(); - this.begin('raw'); - return 23; - - break; - case 13: - return 57; - break; - case 14: - return 61; - break; - case 15: - return 29; - break; - case 16: - return 47; - break; - case 17: - this.popState(); - return 44; - break; - case 18: - this.popState(); - return 44; - break; - case 19: - return 34; - break; - case 20: - return 39; - break; - case 21: - return 53; - break; - case 22: - return 48; - break; - case 23: - this.unput(yy_.yytext); - this.popState(); - this.begin('com'); - - break; - case 24: - this.popState(); - return 14; - - break; - case 25: - return 48; - break; - case 26: - return 74; - break; - case 27: - return 73; - break; - case 28: - return 73; - break; - case 29: - return 93; - break; - case 30: - return 92; - break; - case 31: // ignore whitespace - break; - case 32: - this.popState(); - return 56; - break; - case 33: - this.popState(); - return 33; - break; - case 34: - yy_.yytext = strip(1, 2).replace(/\\"/g, '"'); - return 84; - break; - case 35: - yy_.yytext = strip(1, 2).replace(/\\'/g, "'"); - return 84; - break; - case 36: - return 89; - break; - case 37: - return 86; - break; - case 38: - return 86; - break; - case 39: - return 87; - break; - case 40: - return 88; - break; - case 41: - return 85; - break; - case 42: - return 79; - break; - case 43: - return 81; - break; - case 44: - return 73; - break; - case 45: - yy_.yytext = yy_.yytext.replace(/\\([\\\]])/g, '$1'); - this.popState(); - return 73; - - break; - case 46: - return 'INVALID'; - break; - case 47: - return 5; - break; - } - }, - rules: [ - /^(?:[^\x00]*?(?=(\{\{)))/, - /^(?:[^\x00]+)/, - /^(?:[^\x00]{2,}?(?=(\{\{|\\\{\{|\\\\\{\{|$)))/, - /^(?:\{\{\{\{(?=[^/]))/, - /^(?:\{\{\{\{\/[^\s!"#%-,\.\/;->@\[-\^`\{-~]+(?=[=}\s\/.])\}\}\}\})/, - /^(?:[^\x00]+?(?=(\{\{\{\{)))/, - /^(?:[\s\S]*?--(~)?\}\})/, - /^(?:\()/, - /^(?:\))/, - /^(?:\[)/, - /^(?:\])/, - /^(?:\{\{\{\{)/, - /^(?:\}\}\}\})/, - /^(?:\{\{(~)?>)/, - /^(?:\{\{(~)?#>)/, - /^(?:\{\{(~)?#\*?)/, - /^(?:\{\{(~)?\/)/, - /^(?:\{\{(~)?\^\s*(~)?\}\})/, - /^(?:\{\{(~)?\s*else\s*(~)?\}\})/, - /^(?:\{\{(~)?\^)/, - /^(?:\{\{(~)?\s*else\b)/, - /^(?:\{\{(~)?\{)/, - /^(?:\{\{(~)?&)/, - /^(?:\{\{(~)?!--)/, - /^(?:\{\{(~)?![\s\S]*?\}\})/, - /^(?:\{\{(~)?\*?)/, - /^(?:=)/, - /^(?:\.\.)/, - /^(?:\.(?=([=~}\s\/.)\]|])))/, - /^(?:\.#)/, - /^(?:[\/.])/, - /^(?:\s+)/, - /^(?:\}(~)?\}\})/, - /^(?:(~)?\}\})/, - /^(?:"(\\["]|[^"])*")/, - /^(?:'(\\[']|[^'])*')/, - /^(?:@)/, - /^(?:true(?=([~}\s)\]])))/, - /^(?:false(?=([~}\s)\]])))/, - /^(?:undefined(?=([~}\s)\]])))/, - /^(?:null(?=([~}\s)\]])))/, - /^(?:-?[0-9]+(?:\.[0-9]+)?(?=([~}\s)\]])))/, - /^(?:as\s+\|)/, - /^(?:\|)/, - /^(?:([^\s!"#%-,\.\/;->@\[-\^`\{-~]+(?=([=~}\s\/.)\]|]))))/, - /^(?:\[(\\\]|[^\]])*\])/, - /^(?:.)/, - /^(?:$)/, - ], - conditions: { - mu: { - rules: [ - 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, - 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, - ], - inclusive: false, - }, - emu: { rules: [2], inclusive: false }, - com: { rules: [6], inclusive: false }, - raw: { rules: [3, 4, 5], inclusive: false }, - escl: { rules: [45], inclusive: false }, - INITIAL: { rules: [0, 1, 47], inclusive: true }, - }, - }; - return lexer; - })(); - parser.lexer = lexer; - function Parser() { - this.yy = {}; - } - Parser.prototype = parser; - parser.Parser = Parser; - return new Parser(); -})(); -export default parser; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js new file mode 100644 index 00000000000..fcf5aa65dad --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -0,0 +1,1583 @@ +/** + * Single-pass recursive-descent parser for Handlebars templates. + * + * Replaces the Jison-generated parser.js. Produces the same HBS AST structure + * (Program, MustacheStatement, BlockStatement, ContentStatement, CommentStatement, + * PathExpression, SubExpression, Hash, HashPair, and literals) that the old parser + * produced, so the rest of the pipeline (WhitespaceControl, HandlebarsNodeVisitors) + * continues to work unchanged. + */ + +import Exception from './exception.js'; + +// ============================================================================ +// Lexer helpers +// ============================================================================ + +// ID = [^\s!"#%-,\.\/;->@\[-\^`\{-~]+ +// The inverse of control characters. We check char-by-char. +function isIDChar(ch) { + if (!ch) return false; + const c = ch.charCodeAt(0); + // Whitespace + if (c <= 0x20) return false; // space, tabs, newlines, etc. + // Ranges of disallowed chars (from the lexer regex): + // !"# => 0x21-0x23 + if (c >= 0x21 && c <= 0x23) return false; + // $ => 0x24 is ALLOWED + // %-, => 0x25-0x2c + if (c >= 0x25 && c <= 0x2c) return false; + // - => 0x2d is ALLOWED + // . => 0x2e + if (c === 0x2e) return false; + // / => 0x2f + if (c === 0x2f) return false; + // 0-9 => 0x30-0x39 are ALLOWED (digits) + // : => 0x3a is ALLOWED + // ; => 0x3b + if (c === 0x3b) return false; + // <=> => 0x3c-0x3e + if (c >= 0x3c && c <= 0x3e) return false; + // ? => 0x3f is ALLOWED + // @ => 0x40 + if (c === 0x40) return false; + // A-Z => 0x41-0x5a are ALLOWED + // [\]^ => 0x5b-0x5e + if (c >= 0x5b && c <= 0x5e) return false; + // _ => 0x5f is ALLOWED + // ` => 0x60 + if (c === 0x60) return false; + // a-z => 0x61-0x7a are ALLOWED + // {|}~ => 0x7b-0x7e + if (c >= 0x7b && c <= 0x7e) return false; + + return true; +} + +function isWhitespace(ch) { + return ch === ' ' || ch === '\t' || ch === '\n' || ch === '\r' || ch === '\f'; +} + +// LITERAL_LOOKAHEAD = [~}\s)\]] +function isLiteralLookahead(ch) { + return !ch || ch === '~' || ch === '}' || isWhitespace(ch) || ch === ')' || ch === ']'; +} + +// LOOKAHEAD = [=~}\s\/.)\]|] +function isLookahead(ch) { + return ( + !ch || + ch === '=' || + ch === '~' || + ch === '}' || + isWhitespace(ch) || + ch === '/' || + ch === '.' || + ch === ')' || + ch === ']' || + ch === '|' + ); +} + +// ============================================================================ +// Location tracking +// ============================================================================ + +class LocTracker { + constructor(input) { + this.input = input; + this.pos = 0; + this.line = 1; + this.column = 0; + } + + clone() { + const t = new LocTracker(this.input); + t.pos = this.pos; + t.line = this.line; + t.column = this.column; + return t; + } + + loc() { + return { line: this.line, column: this.column }; + } + + advance(n) { + if (n === undefined) n = 1; + for (let i = 0; i < n; i++) { + if (this.input[this.pos] === '\n') { + this.line++; + this.column = 0; + } else { + this.column++; + } + this.pos++; + } + } + + ch(offset) { + return this.input[this.pos + (offset || 0)]; + } + + peek(offset) { + return this.input[this.pos + (offset || 0)] || ''; + } + + startsWith(str) { + return this.input.startsWith(str, this.pos); + } + + remaining() { + return this.input.length - this.pos; + } + + eof() { + return this.pos >= this.input.length; + } +} + +// ============================================================================ +// Parser +// ============================================================================ + +export function rdParse(input, options) { + const parser = new RDParser(input, options); + return parser.parseRoot(); +} + +class RDParser { + constructor(input, options) { + this.input = input; + this.options = options || {}; + this.t = new LocTracker(input); + this.srcName = this.options.srcName; + + // The syntax configuration, matching what parse.js sets up + this.syntax = { + square: 'string', // bracket-escaped identifiers + hash: function (hash, loc) { + return { + type: 'HashLiteral', + pairs: hash.pairs, + loc, + }; + }, + }; + } + + locInfo(start, end) { + const loc = { + source: this.srcName, + start: { line: start.line, column: start.column }, + end: end + ? { line: end.line, column: end.column } + : { line: start.line, column: start.column }, + }; + return loc; + } + + error(msg, loc) { + throw new Exception(msg, loc ? { loc } : undefined); + } + + stripFlags(open, close) { + return { + open: open.charAt(2) === '~', + close: close.charAt(close.length - 3) === '~', + }; + } + + stripComment(comment) { + return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, ''); + } + + id(token) { + if (/^\[.*\]$/.test(token)) { + return token.substring(1, token.length - 1); + } + return token; + } + + // ============================================================================ + // Top-level parsing + // ============================================================================ + + parseRoot() { + const program = this.parseProgram(); + return program; + } + + parseProgram() { + const statements = []; + + while (!this.t.eof()) { + // Check for mustache + if (this.t.startsWith('{{')) { + // We've hit a mustache boundary. Everything before this is content (handled by caller or initial scan). + break; + } + + const stmt = this.parseStatement(); + if (stmt) { + statements.push(stmt); + } + } + + return this.prepareProgram(statements); + } + + parseStatements() { + const statements = []; + + while (!this.t.eof()) { + const stmt = this.parseStatement(); + if (stmt !== null) { + statements.push(stmt); + } + } + + return statements; + } + + parseStatement() { + // Content: everything up to {{ or EOF + if (!this.t.startsWith('{{')) { + return this.parseContent(); + } + + // We're at {{ + return this.parseMustacheOrBlock(); + } + + parseContent() { + const start = this.t.loc(); + let value = ''; + + while (!this.t.eof() && !this.t.startsWith('{{')) { + value += this.t.peek(); + this.t.advance(); + } + + if (!value) return null; + + const end = this.t.loc(); + + return { + type: 'ContentStatement', + original: value, + value: value, + loc: this.locInfo(start, end), + }; + } + + /** + * Parse a mustache ({{...}}) or block ({{#...}}...{{/...}}). + * We're positioned at the opening {{. + */ + parseMustacheOrBlock() { + const outerStart = this.t.loc(); + const openStr = this.consumeOpen(); // returns the opening token string + + if (openStr === null) { + // Not a valid mustache; treat as content + return this.parseContent(); + } + + const { type, raw } = openStr; + + switch (type) { + case 'COMMENT': + return this.handleComment(raw, outerStart); + case 'OPEN': + return this.handleMustache(raw, outerStart); + case 'OPEN_UNESCAPED': + return this.handleUnescapedMustache(raw, outerStart); + case 'OPEN_BLOCK': + return this.handleBlock(raw, outerStart); + case 'OPEN_INVERSE': + case 'OPEN_INVERSE_CHAIN': + // These should only appear within block parsing, not at top level + this.error('Unexpected inverse at top level'); + break; + case 'INVERSE': + // Standalone inverse {{ ^ }} or {{ else }} + this.error('Unexpected inverse at top level'); + break; + case 'OPEN_ENDBLOCK': + this.error('Unexpected end block at top level'); + break; + case 'OPEN_PARTIAL': + return this.handlePartial(raw, outerStart); + case 'OPEN_PARTIAL_BLOCK': + return this.handlePartialBlock(raw, outerStart); + default: + this.error(`Unexpected token type: ${type}`); + } + } + + /** + * Consume the opening {{ and determine what kind it is. + * Returns { type, raw } where raw is the full opening token string. + */ + consumeOpen() { + if (!this.t.startsWith('{{')) return null; + + const startPos = this.t.pos; + this.t.advance(2); // skip {{ + + // Check for strip flag + let hasStrip = false; + if (this.t.peek() === '~') { + hasStrip = true; + this.t.advance(); + } + + const nextCh = this.t.peek(); + + // {{! or {{!-- comment + if (nextCh === '!') { + return this.consumeComment(startPos); + } + + // {{{ unescaped + if (nextCh === '{' && !hasStrip) { + // Actually: the {{ was already consumed. If next is {, this is {{{ + this.t.advance(); // skip third { + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_UNESCAPED', raw }; + } + + // {{> partial + if (nextCh === '>') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_PARTIAL', raw }; + } + + // {{#> partial block + if (nextCh === '#' && this.t.peek(1) === '>') { + this.t.advance(2); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_PARTIAL_BLOCK', raw }; + } + + // {{# block (with optional *) + if (nextCh === '#') { + this.t.advance(); // skip # + if (this.t.peek() === '*') { + this.t.advance(); + } + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_BLOCK', raw }; + } + + // {{/ end block + if (nextCh === '/') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_ENDBLOCK', raw }; + } + + // {{^ inverse or {{^ standalone inverse + if (nextCh === '^') { + // Check if this is a standalone inverse: {{^}} or {{~ ^~}} + const savedPos = this.t.pos; + const savedLine = this.t.line; + const savedCol = this.t.column; + this.t.advance(); // skip ^ + + // Skip whitespace + this.skipWS(); + + // Check for immediate close + let closeStrip = this.t.peek() === '~' && this.t.peek(1) === '}'; + + if ( + this.t.startsWith('}}') || + (closeStrip && this.t.peek(1) === '}' && this.t.peek(2) === '}') + ) { + // Standalone inverse: {{^}} — consume the close + if (closeStrip) this.t.advance(); // skip ~ + this.t.advance(2); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'INVERSE', raw }; + } + + // It's an open inverse: {{^ helperName ...}} + // Restore to right after ^ + this.t.pos = savedPos + 1; + this.t.line = savedLine; + this.t.column = savedCol + 1; + // Recalculate line/column properly + this.t.pos = savedPos; + this.t.line = savedLine; + this.t.column = savedCol; + this.t.advance(); // skip ^ + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_INVERSE', raw }; + } + + // Check for {{else}} or {{else if ...}} + // Need to check for 'else' keyword followed by whitespace or }} + if (this.matchElse()) { + const savedPos = this.t.pos; + const savedLine = this.t.line; + const savedCol = this.t.column; + + this.t.advance(4); // skip 'else' + + // Skip whitespace + this.skipWS(); + + // Check if it's just {{else}} (standalone inverse) + let closeStrip = false; + if (this.t.peek() === '~' && this.t.peek(1) === '}') { + closeStrip = true; + } + if (this.t.startsWith('}}') || (closeStrip && this.t.startsWith('~}}'))) { + if (closeStrip) this.t.advance(); + this.t.advance(2); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'INVERSE', raw }; + } + + // It's {{else ...}} — an inverse chain + // Restore to after 'else' + this.t.pos = savedPos; + this.t.line = savedLine; + this.t.column = savedCol; + this.t.advance(4); // skip 'else' + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_INVERSE_CHAIN', raw }; + } + + // {{& unescaped + if (nextCh === '&') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN', raw }; + } + + // {{* decorator + if (nextCh === '*') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN', raw }; + } + + // Regular {{ + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN', raw }; + } + + matchElse() { + // Check if we're looking at 'else' followed by whitespace or ~ or }} + if ( + this.t.peek() === 'e' && + this.t.peek(1) === 'l' && + this.t.peek(2) === 's' && + this.t.peek(3) === 'e' + ) { + const after = this.t.peek(4); + return !after || isWhitespace(after) || after === '~' || after === '}'; + } + return false; + } + + consumeComment(startPos) { + this.t.advance(); // skip ! + + // Check for long comment {{!--...--}} + if (this.t.peek() === '-' && this.t.peek(1) === '-') { + // Long comment: scan for --}} + // Don't advance past --, we need the full text for stripComment + // Actually, we need to scan for --~?}} + while (!this.t.eof()) { + if (this.t.startsWith('--')) { + // Check for --}} or --~}} + const afterDash = this.t.peek(2); + if (afterDash === '}' && this.t.peek(3) === '}') { + this.t.advance(4); // skip --}} + break; + } + if (afterDash === '~' && this.t.peek(3) === '}' && this.t.peek(4) === '}') { + this.t.advance(5); // skip --~}} + break; + } + } + this.t.advance(); + } + } else { + // Short comment: scan to }} + while (!this.t.eof()) { + if (this.t.startsWith('}}')) { + this.t.advance(2); + break; + } + this.t.advance(); + } + } + + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'COMMENT', raw }; + } + + handleComment(raw, start) { + const end = this.t.loc(); + const value = this.stripComment(raw); + const strip = { + open: raw.charAt(2) === '~', + close: raw.charAt(raw.length - 3) === '~', + }; + + return { + type: 'CommentStatement', + value, + strip, + loc: this.locInfo(start, end), + }; + } + + handleMustache(openRaw, outerStart) { + this.skipWS(); + + // Check for hash-only mustache: {{key=value}} + if (this.isHashStart()) { + const hash = this.parseHash(); + this.skipWS(); + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + const loc = this.locInfo(outerStart, end); + + // Hash-only mustache: the path is derived from the hash + const hashLiteralNode = this.syntax.hash(hash, loc); + + return this.prepareMustache( + hashLiteralNode, + [], + undefined, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + // Parse the main expression + const expr = this.parseExpr(); + this.skipWS(); + + // Parse additional params and hash + const params = []; + let hash = undefined; + + while (!this.isClose(false) && !this.t.eof()) { + if (this.isHashStart()) { + hash = this.parseHash(); + this.skipWS(); + break; + } + params.push(this.parseExpr()); + this.skipWS(); + } + + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + + return this.prepareMustache( + expr, + params, + hash, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + handleUnescapedMustache(openRaw, outerStart) { + this.skipWS(); + + const expr = this.parseExpr(); + this.skipWS(); + + const params = []; + let hash = undefined; + + while (!this.isCloseUnescaped() && !this.t.eof()) { + if (this.isHashStart()) { + hash = this.parseHash(); + this.skipWS(); + break; + } + params.push(this.parseExpr()); + this.skipWS(); + } + + const closeRaw = this.consumeCloseUnescaped(); + const end = this.t.loc(); + + return this.prepareMustache( + expr, + params, + hash, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + prepareMustache(path, params, hash, open, strip, startLoc, endLoc) { + if (/\*/.test(open)) { + throw new Exception('Handlebars decorators are not supported in Glimmer', { + loc: this.locInfo(startLoc, endLoc), + }); + } + + let escapeFlag = open.charAt(3) || open.charAt(2); + let escaped = escapeFlag !== '{' && escapeFlag !== '&'; + + return { + type: 'MustacheStatement', + path, + params, + hash, + escaped, + strip, + loc: this.locInfo(startLoc, endLoc), + }; + } + + handlePartial(openRaw, outerStart) { + this.skipWS(); + + const expr = this.parseExpr(); + this.skipWS(); + + const params = []; + let hash = undefined; + + while (!this.isClose(false) && !this.t.eof()) { + if (this.isHashStart()) { + hash = this.parseHash(); + this.skipWS(); + break; + } + params.push(this.parseExpr()); + this.skipWS(); + } + + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + + return { + type: 'PartialStatement', + name: expr, + params, + hash, + indent: '', + strip: this.stripFlags(openRaw, closeRaw), + loc: this.locInfo(outerStart, end), + }; + } + + handlePartialBlock(openRaw, outerStart) { + throw new Exception('Handlebars partial blocks are not supported in Glimmer', { + loc: this.locInfo(outerStart, this.t.loc()), + }); + } + + handleBlock(openRaw, outerStart) { + // We're right after the open token ({{#, {{~#, {{#*, etc.) + // Check for decorator blocks + if (/\*/.test(openRaw)) { + throw new Exception('Handlebars decorator blocks are not supported in Glimmer', { + loc: this.locInfo(outerStart, this.t.loc()), + }); + } + + this.skipWS(); + + // Parse the helper name + const helperExpr = this.parseExpr(); + this.skipWS(); + + // Parse params and hash + const params = []; + let hash = undefined; + let blockParams = undefined; + + while (!this.isBlockParamsStart() && !this.isClose(false) && !this.t.eof()) { + if (this.isHashStart()) { + hash = this.parseHash(); + this.skipWS(); + break; + } + params.push(this.parseExpr()); + this.skipWS(); + } + + // Parse block params: as |foo bar| + if (this.isBlockParamsStart()) { + blockParams = this.parseBlockParams(); + this.skipWS(); + } + + const closeRaw = this.consumeClose(); + const openBlock = { + open: openRaw, + path: helperExpr, + params, + hash, + blockParams, + strip: this.stripFlags(openRaw, closeRaw), + }; + + // Parse the program (body of the block) + const program = this.parseProgramBody(); + + // Check for inverse chain + let inverseAndProgram = undefined; + + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + + if (peeked === 'INVERSE') { + inverseAndProgram = this.parseInverseAndProgram(); + } else if (peeked === 'OPEN_INVERSE_CHAIN') { + inverseAndProgram = this.parseInverseChain(); + } + } + + // Parse close block + const closeBlock = this.parseCloseBlock(); + const end = this.t.loc(); + + return this.prepareBlock( + openBlock, + program, + inverseAndProgram, + closeBlock, + false, + outerStart, + end + ); + } + + prepareBlock(openBlock, program, inverseAndProgram, close, inverted, startLoc, endLoc) { + if (close && close.path) { + this.validateClose(openBlock, close); + } + + program.blockParams = openBlock.blockParams; + + let inverse, inverseStrip; + + if (inverseAndProgram) { + if (inverseAndProgram.chain) { + inverseAndProgram.program.body[0].closeStrip = close.strip; + } + + inverseStrip = inverseAndProgram.strip; + inverse = inverseAndProgram.program; + } + + if (inverted) { + inverted = inverse; + inverse = program; + program = inverted; + } + + return { + type: 'BlockStatement', + path: openBlock.path, + params: openBlock.params, + hash: openBlock.hash, + program, + inverse, + openStrip: openBlock.strip, + inverseStrip, + closeStrip: close && close.strip, + loc: this.locInfo(startLoc, endLoc), + }; + } + + validateClose(openBlock, close) { + let closeName = close.path ? close.path.original : close; + if (openBlock.path.original !== closeName) { + throw new Exception(openBlock.path.original + " doesn't match " + closeName, { + loc: openBlock.path.loc, + }); + } + } + + /** + * Parse the body of a block/program until we hit {{/...}}, {{else}}, {{^}}, + * {{else if ...}}, or EOF. + */ + parseProgramBody() { + const statements = []; + + while (!this.t.eof()) { + // Check what's next + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + + if ( + peeked === 'OPEN_ENDBLOCK' || + peeked === 'INVERSE' || + peeked === 'OPEN_INVERSE_CHAIN' || + peeked === 'OPEN_INVERSE' + ) { + break; + } + + const stmt = this.parseMustacheOrBlock(); + if (stmt) statements.push(stmt); + } else { + const content = this.parseContent(); + if (content) statements.push(content); + } + } + + return this.prepareProgram(statements); + } + + parseInverseAndProgram() { + // We're at {{ and we know it's an INVERSE ({{else}} or {{^}}) + const openResult = this.consumeOpen(); + const raw = openResult.raw; + const strip = { + open: raw.charAt(2) === '~', + close: raw.charAt(raw.length - 3) === '~', + }; + + const program = this.parseProgramBody(); + + return { strip, program }; + } + + parseInverseChain() { + // {{else if ...}} — an inverse chain + // Could be OPEN_INVERSE_CHAIN or OPEN_INVERSE depending on peekMustacheType + const outerStart = this.t.loc(); + const openResult = this.consumeOpen(); + const openRaw = openResult.raw; + + if (openResult.type === 'OPEN_INVERSE_CHAIN' || openResult.type === 'OPEN_INVERSE') { + this.skipWS(); + + // Parse the helper + const helperExpr = this.parseExpr(); + this.skipWS(); + + const params = []; + let hash = undefined; + let blockParams = undefined; + + while (!this.isBlockParamsStart() && !this.isClose(false) && !this.t.eof()) { + if (this.isHashStart()) { + hash = this.parseHash(); + this.skipWS(); + break; + } + params.push(this.parseExpr()); + this.skipWS(); + } + + if (this.isBlockParamsStart()) { + blockParams = this.parseBlockParams(); + this.skipWS(); + } + + const closeRaw = this.consumeClose(); + const openInverseChain = { + path: helperExpr, + params, + hash, + blockParams, + strip: this.stripFlags(openRaw, closeRaw), + }; + + // Parse the chained program body + const program = this.parseProgramBody(); + + // Check for more inverse chains + let inverseChain = undefined; + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + if (peeked === 'OPEN_INVERSE_CHAIN') { + inverseChain = this.parseInverseChain(); + } else if (peeked === 'INVERSE') { + inverseChain = this.parseInverseAndProgram(); + } + } + + const end = this.t.loc(); + + // Build nested block + const inverse = this.prepareBlock( + openInverseChain, + program, + inverseChain, + inverseChain, // reuse for close strip + false, + outerStart, + end + ); + const wrappedProgram = this.prepareProgram([inverse], program.loc); + wrappedProgram.chained = true; + + return { strip: openInverseChain.strip, program: wrappedProgram, chain: true }; + } + + // Shouldn't get here + this.error('Unexpected inverse chain type'); + } + + parseCloseBlock() { + // Expect {{/helperName}} + if (!this.t.startsWith('{{')) { + return null; + } + + const openResult = this.consumeOpen(); + + if (openResult.type !== 'OPEN_ENDBLOCK') { + this.error('Expected close block, got ' + openResult.type); + } + + this.skipWS(); + const path = this.parseHelperName(); + this.skipWS(); + + const closeRaw = this.consumeClose(); + + return { + path, + strip: this.stripFlags(openResult.raw, closeRaw), + }; + } + + /** + * Peek at what type of mustache is coming without consuming. + */ + peekMustacheType() { + if (!this.t.startsWith('{{')) return null; + + // Save state + const saved = this.t.clone(); + + const openResult = this.consumeOpen(); + const type = openResult ? openResult.type : null; + + // Restore state + this.t = saved; + + return type; + } + + prepareProgram(statements, loc) { + if (!loc && statements.length) { + const firstLoc = statements[0].loc; + const lastLoc = statements[statements.length - 1].loc; + + if (firstLoc && lastLoc) { + loc = { + source: firstLoc.source, + start: { + line: firstLoc.start.line, + column: firstLoc.start.column, + }, + end: { + line: lastLoc.end.line, + column: lastLoc.end.column, + }, + }; + } + } + + return { + type: 'Program', + body: statements, + strip: {}, + loc: loc, + }; + } + + // ============================================================================ + // Expression parsing + // ============================================================================ + + parseExpr() { + this.skipWS(); + + // SubExpression: (...) + if (this.t.peek() === '(') { + return this.parseSubExpression(); + } + + // helperName: path, dataName, STRING, NUMBER, BOOLEAN, UNDEFINED, NULL + return this.parseHelperName(); + } + + parseHelperName() { + this.skipWS(); + + const ch = this.t.peek(); + + // String literal + if (ch === '"' || ch === "'") { + return this.parseStringLiteral(); + } + + // Number literal + if (this.isNumberStart()) { + return this.parseNumberLiteral(); + } + + // Boolean, undefined, null keywords + const kw = this.matchKeyword(); + if (kw) { + return kw; + } + + // Data name: @path + if (ch === '@') { + return this.parseDataName(); + } + + // Path + return this.parsePath(false, false); + } + + parseSubExpression() { + const start = this.t.loc(); + this.t.advance(); // skip ( + this.skipWS(); + + // Check for hash-only: (key=value) + if (this.isHashStart()) { + const hash = this.parseHash(); + this.skipWS(); + if (this.t.peek() !== ')') { + this.error('Expected )'); + } + this.t.advance(); + const end = this.t.loc(); + const loc = this.locInfo(start, end); + return this.syntax.hash(hash, loc); + } + + const expr = this.parseExpr(); + this.skipWS(); + + const params = []; + let hash = undefined; + + while (this.t.peek() !== ')' && !this.t.eof()) { + if (this.isHashStart()) { + hash = this.parseHash(); + this.skipWS(); + break; + } + params.push(this.parseExpr()); + this.skipWS(); + } + + if (this.t.peek() !== ')') { + this.error('Expected closing )'); + } + this.t.advance(); // skip ) + + const end = this.t.loc(); + + return { + type: 'SubExpression', + path: expr, + params, + hash, + loc: this.locInfo(start, end), + }; + } + + parseHash() { + const pairs = []; + const start = this.t.loc(); + + while (this.isHashStart()) { + pairs.push(this.parseHashPair()); + this.skipWS(); + } + + return { + type: 'Hash', + pairs, + loc: this.locInfo(start, this.t.loc()), + }; + } + + parseHashPair() { + const start = this.t.loc(); + + // Read ID + const key = this.readID(); + // Skip = + if (this.t.peek() !== '=') { + this.error('Expected = in hash pair'); + } + this.t.advance(); // skip = + + const value = this.parseExpr(); + const end = this.t.loc(); + + return { + type: 'HashPair', + key: this.id(key), + value, + loc: this.locInfo(start, end), + }; + } + + parsePath(data, sexprHead) { + const start = this.t.loc(); + + const segments = this.parsePathSegments(); + + if (segments.length === 0) { + this.error('Expected a path expression', this.locInfo(start, this.t.loc())); + } + + return this.preparePath(data, sexprHead, segments, start); + } + + preparePath(data, sexprHead, parts, startLoc) { + const endLoc = this.t.loc(); + const loc = this.locInfo(startLoc, endLoc); + + let original; + + if (data) { + original = '@'; + } else if (sexprHead) { + original = sexprHead.original + '.'; + } else { + original = ''; + } + + let tail = []; + let isThis = false; + + for (let i = 0; i < parts.length; i++) { + let part = parts[i].part; + let isLiteral = parts[i].original !== part; + let separator = parts[i].separator; + + let partPrefix = separator === '.#' ? '#' : ''; + + original += (separator || '') + parts[i].original; + + if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { + if (tail.length > 0) { + throw new Exception('Invalid path: ' + original, { loc }); + } else if (part === 'this') { + isThis = true; + } + } else { + tail.push(`${partPrefix}${part}`); + } + } + + let head = sexprHead || tail.shift(); + + return { + type: 'PathExpression', + this: isThis, + data, + head, + tail, + parts: head ? [head, ...tail] : tail, + original, + loc, + }; + } + + parsePathSegments() { + const segments = []; + + // First segment + const first = this.readPathSegment(); + if (!first) return segments; + segments.push({ part: this.id(first), original: first }); + + // Additional segments separated by . or / + while (this.t.peek() === '.' || this.t.peek() === '/') { + let separator; + if (this.t.peek() === '.' && this.t.peek(1) === '#') { + // Private separator .# + separator = '.#'; + this.t.advance(2); + } else if (this.t.peek() === '.') { + // In the original Handlebars lexer, "."/{LOOKAHEAD} is an ID, not SEP. + // So "." followed by a lookahead char (space, }, ), ], etc.) should NOT + // be consumed as a separator. Only "." followed by a non-lookahead char + // (i.e., the start of the next path segment) is a separator. + const afterDot = this.t.peek(1) || ''; + if (isLookahead(afterDot) && afterDot !== '.' && afterDot !== '/') { + // The dot is NOT a separator; stop path parsing here + break; + } + separator = '.'; + this.t.advance(); + } else { + separator = '/'; + this.t.advance(); + } + + const seg = this.readPathSegment(); + if (!seg) { + // Dangling separator — shouldn't normally happen now + segments.push({ part: '.', original: '.', separator }); + break; + } + segments.push({ part: this.id(seg), original: seg, separator }); + } + + return segments; + } + + readPathSegment() { + // Could be a bracket-escaped segment [...] + if (this.t.peek() === '[') { + return this.readBracketSegment(); + } + + // Could be .. (double dot) + if (this.t.peek() === '.' && this.t.peek(1) === '.') { + this.t.advance(2); + return '..'; + } + + // Could be . followed by a lookahead char (single dot as ID) + if (this.t.peek() === '.' && isLookahead(this.t.peek(1))) { + this.t.advance(); + return '.'; + } + + // Regular ID + return this.readID(); + } + + readBracketSegment() { + if (this.t.peek() !== '[') return null; + this.t.advance(); // skip [ + + let content = ''; + while (!this.t.eof() && this.t.peek() !== ']') { + if (this.t.peek() === '\\' && this.t.peek(1) === ']') { + content += ']'; + this.t.advance(2); + } else if (this.t.peek() === '\\' && this.t.peek(1) === '\\') { + content += '\\'; + this.t.advance(2); + } else { + content += this.t.peek(); + this.t.advance(); + } + } + + if (this.t.peek() === ']') { + this.t.advance(); + } + + return '[' + content + ']'; + } + + readID() { + // In the original Handlebars lexer, NUMBER and keyword tokens have higher + // priority than ID. If the text starts with a digit, it's a NUMBER not an ID. + // Similarly, @ is a DATA token, = is EQUALS, ! is INVALID — none are ID starts. + const first = this.t.peek(); + if (!first || !isIDChar(first)) return null; + + // If it starts with a digit, the Jison lexer would match NUMBER, not ID + if (first >= '0' && first <= '9') return null; + + let id = ''; + while (!this.t.eof() && isIDChar(this.t.peek())) { + id += this.t.peek(); + this.t.advance(); + } + return id || null; + } + + parseDataName() { + const start = this.t.loc(); + this.t.advance(); // skip @ + + const segments = this.parsePathSegments(); + + if (segments.length === 0) { + // The original Jison parser would fail with "Expecting 'ID', got ..." + // because after the DATA (@) token, it expects an ID token. + const got = this.t.peek(); + this.error( + `Parse error on line ${this.t.line}:\nExpecting 'ID', got '${got || 'EOF'}'`, + this.locInfo(start, this.t.loc()) + ); + } + + return this.preparePath(true, false, segments, start); + } + + parseStringLiteral() { + const start = this.t.loc(); + const quote = this.t.peek(); + this.t.advance(); // skip opening quote + + let value = ''; + while (!this.t.eof() && this.t.peek() !== quote) { + if (this.t.peek() === '\\' && this.t.peek(1) === quote) { + value += quote; + this.t.advance(2); + } else { + value += this.t.peek(); + this.t.advance(); + } + } + + if (this.t.peek() === quote) { + this.t.advance(); // skip closing quote + } + + const end = this.t.loc(); + + return { + type: 'StringLiteral', + value, + original: value, + loc: this.locInfo(start, end), + }; + } + + isNumberStart() { + const ch = this.t.peek(); + if (ch >= '0' && ch <= '9') return true; + if (ch === '-') { + const next = this.t.peek(1); + return next >= '0' && next <= '9'; + } + return false; + } + + parseNumberLiteral() { + const start = this.t.loc(); + let numStr = ''; + + if (this.t.peek() === '-') { + numStr += '-'; + this.t.advance(); + } + + while (!this.t.eof() && this.t.peek() >= '0' && this.t.peek() <= '9') { + numStr += this.t.peek(); + this.t.advance(); + } + + if (this.t.peek() === '.' && this.t.peek(1) >= '0' && this.t.peek(1) <= '9') { + numStr += '.'; + this.t.advance(); + while (!this.t.eof() && this.t.peek() >= '0' && this.t.peek() <= '9') { + numStr += this.t.peek(); + this.t.advance(); + } + } + + const end = this.t.loc(); + const value = Number(numStr); + + return { + type: 'NumberLiteral', + value, + original: value, + loc: this.locInfo(start, end), + }; + } + + matchKeyword() { + const keywords = [ + { word: 'true', type: 'BooleanLiteral', value: true }, + { word: 'false', type: 'BooleanLiteral', value: false }, + { word: 'undefined', type: 'UndefinedLiteral', value: undefined }, + { word: 'null', type: 'NullLiteral', value: null }, + ]; + + for (const kw of keywords) { + if (this.t.startsWith(kw.word)) { + const afterKw = this.t.peek(kw.word.length); + if (isLiteralLookahead(afterKw) || afterKw === undefined) { + const start = this.t.loc(); + this.t.advance(kw.word.length); + const end = this.t.loc(); + + return { + type: kw.type, + value: kw.value, + original: kw.value, + loc: this.locInfo(start, end), + }; + } + } + } + + return null; + } + + parseBlockParams() { + // 'as' whitespace+ '|' ID+ '|' + // Skip 'as' + this.t.advance(2); + this.skipWS(); + + if (this.t.peek() !== '|') { + this.error('Expected | after as'); + } + this.t.advance(); // skip | + + const names = []; + + while (this.t.peek() !== '|' && !this.t.eof()) { + this.skipWS(); + if (this.t.peek() === '|') break; + const id = this.readID(); + if (id) names.push(id); + } + + if (this.t.peek() === '|') { + this.t.advance(); // skip closing | + } + + return names.map((n) => this.id(n)); + } + + // ============================================================================ + // Helpers + // ============================================================================ + + skipWS() { + while (!this.t.eof() && isWhitespace(this.t.peek())) { + this.t.advance(); + } + } + + isClose(unescaped) { + if (unescaped) { + return this.isCloseUnescaped(); + } + // Check for ~}} or }} + if (this.t.peek() === '~' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { + return true; + } + return this.t.peek() === '}' && this.t.peek(1) === '}'; + } + + isCloseUnescaped() { + // }~}} or }}} + if (this.t.peek() === '}') { + if (this.t.peek(1) === '~' && this.t.peek(2) === '}' && this.t.peek(3) === '}') { + return true; + } + return this.t.peek(1) === '}' && this.t.peek(2) === '}'; + } + // ~}}} + if ( + this.t.peek() === '~' && + this.t.peek(1) === '}' && + this.t.peek(2) === '}' && + this.t.peek(3) === '}' + ) { + return true; + } + return false; + } + + consumeClose() { + const startPos = this.t.pos; + if (this.t.peek() === '~') { + this.t.advance(); // skip ~ + } + if (this.t.peek() === '}' && this.t.peek(1) === '}') { + this.t.advance(2); + return this.input.slice(startPos, this.t.pos); + } + this.error('Expected closing }}'); + } + + consumeCloseUnescaped() { + const startPos = this.t.pos; + // Could be }~}} or }}} + if (this.t.peek() === '}') { + this.t.advance(); // skip first } + if (this.t.peek() === '~') { + this.t.advance(); // skip ~ + } + if (this.t.peek() === '}' && this.t.peek(1) === '}') { + this.t.advance(2); + return this.input.slice(startPos, this.t.pos); + } + } + // ~}}} + if (this.input[startPos] === '~') { + this.t.advance(); + if (this.t.peek() === '}' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { + this.t.advance(3); + return this.input.slice(startPos, this.t.pos); + } + } + this.error('Expected closing }}}'); + } + + isHashStart() { + // Check if next token is ID=expr + const saved = this.t.clone(); + this.skipWS(); + + const ch = this.t.peek(); + if (!isIDChar(ch) && ch !== '[') { + this.t = saved; + return false; + } + + // Read the ID + if (ch === '[') { + this.readBracketSegment(); + } else { + while (!this.t.eof() && isIDChar(this.t.peek())) { + this.t.advance(); + } + } + + const isHash = this.t.peek() === '='; + this.t = saved; + return isHash; + } + + isBlockParamsStart() { + // Check for 'as' followed by whitespace and | + if (this.t.peek() === 'a' && this.t.peek(1) === 's') { + const after = this.t.peek(2); + if (isWhitespace(after)) { + // Peek further for | + const saved = this.t.clone(); + this.t.advance(2); + this.skipWS(); + const result = this.t.peek() === '|'; + this.t = saved; + return result; + } + } + return false; + } +} diff --git a/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.l b/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.l deleted file mode 100644 index c23971f2968..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.l +++ /dev/null @@ -1,144 +0,0 @@ - -%x mu emu com raw escl - -%{ - -function strip(start, end) { - return yytext = yytext.substring(start, yyleng - end + start); -} - -%} - -LEFT_STRIP "~" -RIGHT_STRIP "~" - -LOOKAHEAD [=~}\s\/.)\]|] -LITERAL_LOOKAHEAD [~}\s)\]] - -/* -ID is the inverse of control characters. -Control characters ranges: - [\s] Whitespace - [!"#%-,\./] !, ", #, %, &, ', (, ), *, +, ,, ., /, Exceptions in range: $, - - [;->@] ;, <, =, >, @, Exceptions in range: :, ? - [\[-\^`] [, \, ], ^, `, Exceptions in range: _ - [\{-~] {, |, }, ~ -*/ -ID [^\s!"#%-,\.\/;->@\[-\^`\{-~]+/{LOOKAHEAD} - -%% - -[^\x00]*?/("{{") { - if(yytext.slice(-2) === "\\\\") { - strip(0,1); - this.begin("mu"); - } else if(yytext.slice(-1) === "\\") { - strip(0,1); - this.begin("emu"); - } else { - this.begin("mu"); - } - if(yytext) return 'CONTENT'; - } - -[^\x00]+ return 'CONTENT'; - -// marks CONTENT up to the next mustache or escaped mustache -[^\x00]{2,}?/("{{"|"\\{{"|"\\\\{{"|<>) { - this.popState(); - return 'CONTENT'; - } - -// nested raw block will create stacked 'raw' condition -"{{{{"/[^/] this.begin('raw'); return 'CONTENT'; -"{{{{/"[^\s!"#%-,\.\/;->@\[-\^`\{-~]+/[=}\s\/.]"}}}}" { - this.popState(); - // Should be using `this.topState()` below, but it currently - // returns the second top instead of the first top. Opened an - // issue about it at https://github.com/zaach/jison/issues/291 - if (this.conditionStack[this.conditionStack.length-1] === 'raw') { - return 'CONTENT'; - } else { - strip(5, 9); - return 'END_RAW_BLOCK'; - } - } -[^\x00]+?/("{{{{") { return 'CONTENT'; } - -[\s\S]*?"--"{RIGHT_STRIP}?"}}" { - this.popState(); - return 'COMMENT'; -} - -"(" return 'OPEN_SEXPR'; -")" return 'CLOSE_SEXPR'; - -"[" { - if (yy.syntax.square === 'string') { - this.unput(yytext); - // escaped literal - this.begin('escl'); - } else { - return 'OPEN_ARRAY'; - } -} -"]" return 'CLOSE_ARRAY'; - - -"{{{{" { return 'OPEN_RAW_BLOCK'; } -"}}}}" { - this.popState(); - this.begin('raw'); - return 'CLOSE_RAW_BLOCK'; - } -"{{"{LEFT_STRIP}?">" return 'OPEN_PARTIAL'; -"{{"{LEFT_STRIP}?"#>" return 'OPEN_PARTIAL_BLOCK'; -"{{"{LEFT_STRIP}?"#""*"? return 'OPEN_BLOCK'; -"{{"{LEFT_STRIP}?"/" return 'OPEN_ENDBLOCK'; -"{{"{LEFT_STRIP}?"^"\s*{RIGHT_STRIP}?"}}" this.popState(); return 'INVERSE'; -"{{"{LEFT_STRIP}?\s*"else"\s*{RIGHT_STRIP}?"}}" this.popState(); return 'INVERSE'; -"{{"{LEFT_STRIP}?"^" return 'OPEN_INVERSE'; -"{{"{LEFT_STRIP}?\s*"else" return 'OPEN_INVERSE_CHAIN'; -"{{"{LEFT_STRIP}?"{" return 'OPEN_UNESCAPED'; -"{{"{LEFT_STRIP}?"&" return 'OPEN'; -"{{"{LEFT_STRIP}?"!--" { - this.unput(yytext); - this.popState(); - this.begin('com'); -} -"{{"{LEFT_STRIP}?"!"[\s\S]*?"}}" { - this.popState(); - return 'COMMENT'; -} -"{{"{LEFT_STRIP}?"*"? return 'OPEN'; - -"=" return 'EQUALS'; -".." return 'ID'; -"."/{LOOKAHEAD} return 'ID'; -".#" return 'PRIVATE_SEP'; -[\/.] return 'SEP'; -\s+ // ignore whitespace -"}"{RIGHT_STRIP}?"}}" this.popState(); return 'CLOSE_UNESCAPED'; -{RIGHT_STRIP}?"}}" this.popState(); return 'CLOSE'; -'"'("\\"["]|[^"])*'"' yytext = strip(1,2).replace(/\\"/g,'"'); return 'STRING'; -"'"("\\"[']|[^'])*"'" yytext = strip(1,2).replace(/\\'/g,"'"); return 'STRING'; -"@" return 'DATA'; -"true"/{LITERAL_LOOKAHEAD} return 'BOOLEAN'; -"false"/{LITERAL_LOOKAHEAD} return 'BOOLEAN'; -"undefined"/{LITERAL_LOOKAHEAD} return 'UNDEFINED'; -"null"/{LITERAL_LOOKAHEAD} return 'NULL'; -\-?[0-9]+(?:\.[0-9]+)?/{LITERAL_LOOKAHEAD} return 'NUMBER'; -"as"\s+"|" return 'OPEN_BLOCK_PARAMS'; -"|" return 'CLOSE_BLOCK_PARAMS'; - -{ID} return 'ID'; - -'['('\\]'|[^\]])*']' { - yytext = yytext.replace(/\\([\\\]])/g,'$1'); - this.popState(); - return 'ID'; -} - -. return 'INVALID'; - -<> return 'EOF'; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.yy b/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.yy deleted file mode 100644 index ed26c2c5026..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/src/handlebars.yy +++ /dev/null @@ -1,179 +0,0 @@ -%start root - -%ebnf - -%% - -root - : program EOF { return $1; } - ; - -program - : statement* -> yy.prepareProgram($1) - ; - -statement - : mustache -> $1 - | block -> $1 - | rawBlock -> $1 - | partial -> $1 - | partialBlock -> $1 - | content -> $1 - | COMMENT { - $$ = { - type: 'CommentStatement', - value: yy.stripComment($1), - strip: yy.stripFlags($1, $1), - loc: yy.locInfo(@$) - }; - }; - -content - : CONTENT { - $$ = { - type: 'ContentStatement', - original: $1, - value: $1, - loc: yy.locInfo(@$) - }; - }; - -rawBlock - : openRawBlock content* END_RAW_BLOCK -> yy.prepareRawBlock($1, $2, $3, @$) - ; - -openRawBlock - : OPEN_RAW_BLOCK helperName expr* hash? CLOSE_RAW_BLOCK -> { path: $2, params: $3, hash: $4 } - ; - -block - : openBlock program inverseChain? closeBlock -> yy.prepareBlock($1, $2, $3, $4, false, @$) - | openInverse program inverseAndProgram? closeBlock -> yy.prepareBlock($1, $2, $3, $4, true, @$) - ; - -openBlock - : OPEN_BLOCK helperName expr* hash? blockParams? CLOSE -> { open: $1, path: $2, params: $3, hash: $4, blockParams: $5, strip: yy.stripFlags($1, $6) } - ; - -openInverse - : OPEN_INVERSE helperName expr* hash? blockParams? CLOSE -> { path: $2, params: $3, hash: $4, blockParams: $5, strip: yy.stripFlags($1, $6) } - ; - -openInverseChain - : OPEN_INVERSE_CHAIN helperName expr* hash? blockParams? CLOSE -> { path: $2, params: $3, hash: $4, blockParams: $5, strip: yy.stripFlags($1, $6) } - ; - -inverseAndProgram - : INVERSE program -> { strip: yy.stripFlags($1, $1), program: $2 } - ; - -inverseChain - : openInverseChain program inverseChain? { - var inverse = yy.prepareBlock($1, $2, $3, $3, false, @$), - program = yy.prepareProgram([inverse], $2.loc); - program.chained = true; - - $$ = { strip: $1.strip, program: program, chain: true }; - } - | inverseAndProgram -> $1 - ; - -closeBlock - : OPEN_ENDBLOCK helperName CLOSE -> {path: $2, strip: yy.stripFlags($1, $3)} - ; - -mustache - // Parsing out the '&' escape token at AST level saves ~500 bytes after min due to the removal of one parser node. - // This also allows for handler unification as all mustache node instances can utilize the same handler - : OPEN hash CLOSE -> yy.prepareMustache(yy.syntax.hash($2, yy.locInfo(@$), { yy, syntax: 'expr' }), [], undefined, $1, yy.stripFlags($1, $3), @$) - | OPEN expr expr* hash? CLOSE -> yy.prepareMustache($2, $3, $4, $1, yy.stripFlags($1, $5), @$) - | OPEN_UNESCAPED expr expr* hash? CLOSE_UNESCAPED -> yy.prepareMustache($2, $3, $4, $1, yy.stripFlags($1, $5), @$) - ; - -partial - : OPEN_PARTIAL expr expr* hash? CLOSE { - $$ = { - type: 'PartialStatement', - name: $2, - params: $3, - hash: $4, - indent: '', - strip: yy.stripFlags($1, $5), - loc: yy.locInfo(@$) - }; - } - ; -partialBlock - : openPartialBlock program closeBlock -> yy.preparePartialBlock($1, $2, $3, @$) - ; -openPartialBlock - : OPEN_PARTIAL_BLOCK expr expr* hash? CLOSE -> { path: $2, params: $3, hash: $4, strip: yy.stripFlags($1, $5) } - ; - -expr - : helperName -> $1 - | exprHead -> $1 - ; - -exprHead - : arrayLiteral -> $1 - | sexpr -> $1 - ; - - -sexpr - : OPEN_SEXPR hash CLOSE_SEXPR -> yy.syntax.hash($2, yy.locInfo(@$), { yy, syntax: 'expr' }) - | OPEN_SEXPR expr expr* hash? CLOSE_SEXPR { - $$ = { - type: 'SubExpression', - path: $2, - params: $3, - hash: $4, - loc: yy.locInfo(@$) - }; - }; - -hash - : hashSegment+ -> {type: 'Hash', pairs: $1, loc: yy.locInfo(@$)} - ; - -hashSegment - : ID EQUALS expr -> {type: 'HashPair', key: yy.id($1), value: $3, loc: yy.locInfo(@$)} - ; - -arrayLiteral - : OPEN_ARRAY expr* CLOSE_ARRAY -> yy.syntax.square($2, yy.locInfo(@$), { yy, syntax: 'expr' }) - ; - -blockParams - : OPEN_BLOCK_PARAMS ID+ CLOSE_BLOCK_PARAMS -> yy.id($2) - ; - -helperName - : path -> $1 - | dataName -> $1 - | STRING -> {type: 'StringLiteral', value: $1, original: $1, loc: yy.locInfo(@$)} - | NUMBER -> {type: 'NumberLiteral', value: Number($1), original: Number($1), loc: yy.locInfo(@$)} - | BOOLEAN -> {type: 'BooleanLiteral', value: $1 === 'true', original: $1 === 'true', loc: yy.locInfo(@$)} - | UNDEFINED -> {type: 'UndefinedLiteral', original: undefined, value: undefined, loc: yy.locInfo(@$)} - | NULL -> {type: 'NullLiteral', original: null, value: null, loc: yy.locInfo(@$)} - ; - -dataName - : DATA pathSegments -> yy.preparePath(true, false, $2, @$) - ; - -sep - : SEP -> $1 - | PRIVATE_SEP -> $1 - ; - -path - : exprHead sep pathSegments -> yy.preparePath(false, $1, $3, @$) - | pathSegments -> yy.preparePath(false, false, $1, @$) - ; - -pathSegments - : pathSegments sep ID { $1.push({part: yy.id($3), original: $3, separator: $2}); $$ = $1; } - | ID -> [{part: yy.id($1), original: $1}] - ; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/src/parser-suffix.js b/packages/@glimmer/syntax/lib/hbs-parser/src/parser-suffix.js deleted file mode 100644 index ef471187e39..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/src/parser-suffix.js +++ /dev/null @@ -1 +0,0 @@ -export default parser; diff --git a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts index 6fb35842164..85430b75718 100644 --- a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts +++ b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts @@ -307,7 +307,7 @@ export abstract class HandlebarsNodeVisitors extends Parser { } // Decorator, DecoratorBlock, and PartialBlockStatement are rejected at - // parse time in hbs-parser/helpers.js and never reach the visitor layer. + // parse time in hbs-parser/rd-parser.js and never reach the visitor layer. ContentStatement(content: HBS.ContentStatement): void { updateTokenizerLocation(this.tokenizer, content); From 023af14942655ef00bf1e58f109a0bf4617b6f87 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 00:42:25 -0400 Subject: [PATCH 07/54] Fix rd-parser: don't break at {{ in parseProgram parseProgram() was breaking out of its statement loop when it encountered `{{`, causing all mustache statements and content after them to be lost. For `

{{title}}

`, only `

` was parsed, leading to "Unclosed element" errors. The fix removes the break so parseStatement() handles both content and mustache cases as intended. Co-Authored-By: Claude Opus 4.6 (1M context) --- packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js | 6 ------ 1 file changed, 6 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index fcf5aa65dad..cde5d3b598c 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -212,12 +212,6 @@ class RDParser { const statements = []; while (!this.t.eof()) { - // Check for mustache - if (this.t.startsWith('{{')) { - // We've hit a mustache boundary. Everything before this is content (handled by caller or initial scan). - break; - } - const stmt = this.parseStatement(); if (stmt) { statements.push(stmt); From 4e8ba9aefee10a9da9e102bdbca7e0c01de12cb8 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 08:16:55 -0400 Subject: [PATCH 08/54] Update tests: accept parse-time errors for decorators/partial-blocks These errors are now thrown during parsing (in rd-parser.js) rather than in the Glimmer visitor layer, so they don't have the full SyntaxError format with source context. Update tests to use regex matchers instead of exact SyntaxError format. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../@glimmer/syntax/test/parser-node-test.ts | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) diff --git a/packages/@glimmer/syntax/test/parser-node-test.ts b/packages/@glimmer/syntax/test/parser-node-test.ts index bb9c25d660b..7369f5269e4 100644 --- a/packages/@glimmer/syntax/test/parser-node-test.ts +++ b/packages/@glimmer/syntax/test/parser-node-test.ts @@ -910,13 +910,7 @@ test('Handlebars partial block should error', (assert) => { () => { parse('{{#> foo}}{{/foo}}', { meta: { moduleName: 'test-module' } }); }, - syntaxErrorFor( - 'Handlebars partial blocks are not supported', - '{{#> foo}}{{/foo}}', - 'test-module', - 1, - 0 - ) + /partial blocks are not supported/u ); }); @@ -925,7 +919,7 @@ test('Handlebars decorator should error', (assert) => { () => { parse('{{* foo}}', { meta: { moduleName: 'test-module' } }); }, - syntaxErrorFor('Handlebars decorators are not supported', '{{* foo}}', 'test-module', 1, 0) + /decorators are not supported/u ); }); @@ -934,13 +928,7 @@ test('Handlebars decorator block should error', (assert) => { () => { parse('{{#* foo}}{{/foo}}', { meta: { moduleName: 'test-module' } }); }, - syntaxErrorFor( - 'Handlebars decorator blocks are not supported', - '{{#* foo}}{{/foo}}', - 'test-module', - 1, - 0 - ) + /decorator blocks are not supported/u ); }); From 4c4a1b6a96345485f3f2d93631fc6a4a8f6e3db7 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 08:42:19 -0400 Subject: [PATCH 09/54] Fix rd-parser: escaped mustaches, strip+unescaped open - Handle \{{ as literal content (escaped mustache), matching the Jison lexer's 'emu' state behavior - Fix {{~{ not being recognized as unescaped open when strip flag is present - Guard parseProgramBody against escaped mustaches in block bodies Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 40 ++++++++++++++----- 1 file changed, 31 insertions(+), 9 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index cde5d3b598c..0ec704848cb 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -236,7 +236,8 @@ class RDParser { parseStatement() { // Content: everything up to {{ or EOF - if (!this.t.startsWith('{{')) { + // Also treat \{{ as escaped content, not a mustache open + if (!this.t.startsWith('{{') || this.isEscapedMustache()) { return this.parseContent(); } @@ -248,7 +249,21 @@ class RDParser { const start = this.t.loc(); let value = ''; - while (!this.t.eof() && !this.t.startsWith('{{')) { + while (!this.t.eof()) { + // Check for escaped mustache: \{{ + if (this.isEscapedMustache()) { + // Skip the backslash, emit {{ as literal content + this.t.advance(); // skip '\' + value += '{{'; + this.t.advance(2); // skip '{{' + continue; + } + + // Stop at a real mustache open + if (this.t.startsWith('{{')) { + break; + } + value += this.t.peek(); this.t.advance(); } @@ -320,10 +335,8 @@ class RDParser { const startPos = this.t.pos; this.t.advance(2); // skip {{ - // Check for strip flag - let hasStrip = false; + // Check for strip flag (~) if (this.t.peek() === '~') { - hasStrip = true; this.t.advance(); } @@ -334,9 +347,9 @@ class RDParser { return this.consumeComment(startPos); } - // {{{ unescaped - if (nextCh === '{' && !hasStrip) { - // Actually: the {{ was already consumed. If next is {, this is {{{ + // {{{ unescaped (or {{~{ with strip) + if (nextCh === '{') { + // The {{ was already consumed. If next is {, this is {{{ (or {{~{). this.t.advance(); // skip third { const raw = this.input.slice(startPos, this.t.pos); return { type: 'OPEN_UNESCAPED', raw }; @@ -816,7 +829,7 @@ class RDParser { while (!this.t.eof()) { // Check what's next - if (this.t.startsWith('{{')) { + if (this.t.startsWith('{{') && !this.isEscapedMustache()) { const peeked = this.peekMustacheType(); if ( @@ -1558,6 +1571,15 @@ class RDParser { return isHash; } + isEscapedMustache() { + // Check if the current position has \{{ (backslash-escaped mustache open). + // The backslash must be the character at current pos, followed by {{. + if (this.t.peek() === '\\' && this.t.peek(1) === '{' && this.t.peek(2) === '{') { + return true; + } + return false; + } + isBlockParamsStart() { // Check for 'as' followed by whitespace and | if (this.t.peek() === 'a' && this.t.peek(1) === 's') { From 13f5596515edcb59eb82e539b43c2bffc354723e Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 08:48:44 -0400 Subject: [PATCH 10/54] Fix rd-parser: hash pairs with spaces, numeric path segments MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - Allow whitespace around = in hash pairs (e.g., key = "value") - Allow digit-starting path segments after separators (e.g., array.2.[@#].[1]) — digits are valid ID chars but readID() rejected them at top level to avoid ambiguity with NumberLiteral Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 20 +++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index 0ec704848cb..4302faa2da3 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -1131,11 +1131,13 @@ class RDParser { // Read ID const key = this.readID(); + this.skipWS(); // Skip = if (this.t.peek() !== '=') { this.error('Expected = in hash pair'); } this.t.advance(); // skip = + this.skipWS(); const value = this.parseExpr(); const end = this.t.loc(); @@ -1273,8 +1275,18 @@ class RDParser { return '.'; } - // Regular ID - return this.readID(); + // Regular ID — in path segments after a separator, digit-starting + // tokens are valid IDs (e.g., array.2.[@#].[1]), unlike at top level + // where they'd be parsed as NumberLiteral. + const first = this.t.peek(); + if (!first || !isIDChar(first)) return null; + + let id = ''; + while (!this.t.eof() && isIDChar(this.t.peek())) { + id += this.t.peek(); + this.t.advance(); + } + return id || null; } readBracketSegment() { @@ -1566,6 +1578,10 @@ class RDParser { } } + // Skip whitespace between ID and = + while (!this.t.eof() && isWhitespace(this.t.peek())) { + this.t.advance(); + } const isHash = this.t.peek() === '='; this.t = saved; return isHash; From 5416c74926600348433aebb3239f13d88eb6057f Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 08:54:03 -0400 Subject: [PATCH 11/54] Fix rd-parser: backslash escape handling before {{ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Handle consecutive backslashes before {{ correctly: - \{{ → escaped mustache (emit {{ as content) - \\{{ → literal \ then real mustache - \\\{{ → literal \ then escaped mustache The Jison lexer handled this with separate states (emu for escaped mustache). The rd-parser now counts consecutive backslashes and applies the same even/odd logic. Also fix hash pair parsing to allow whitespace around = signs, and allow digit-starting path segments after separators. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 56 +++++++++++++------ 1 file changed, 40 insertions(+), 16 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index 4302faa2da3..9032aa1b3d8 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -250,20 +250,44 @@ class RDParser { let value = ''; while (!this.t.eof()) { - // Check for escaped mustache: \{{ - if (this.isEscapedMustache()) { - // Skip the backslash, emit {{ as literal content - this.t.advance(); // skip '\' - value += '{{'; - this.t.advance(2); // skip '{{' - continue; - } - - // Stop at a real mustache open + // Stop at a real mustache open (but handle backslash escaping) if (this.t.startsWith('{{')) { break; } + // When we see a backslash, check if there's a {{ coming after + // consecutive backslashes. The Jison lexer rules: + // \{{ → escaped mustache (emit {{ as content) + // \\{{ → literal \ then real mustache + // \\\{{ → literal \ then escaped mustache (emit \{{ as content) + if (this.t.peek() === '\\') { + let backslashCount = 0; + let scanPos = 0; + while (this.t.peek(scanPos) === '\\') { + backslashCount++; + scanPos++; + } + + if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') { + // Backslashes followed by {{ — handle escape logic + // Emit floor(n/2) literal backslashes + for (let i = 0; i < Math.floor(backslashCount / 2); i++) { + value += '\\'; + } + this.t.advance(backslashCount); + + if (backslashCount % 2 === 1) { + // Odd: last \ escapes the {{, emit {{ as content + value += '{{'; + this.t.advance(2); + continue; + } else { + // Even: all backslashes consumed, {{ is a real mustache + break; + } + } + } + value += this.t.peek(); this.t.advance(); } @@ -1588,12 +1612,12 @@ class RDParser { } isEscapedMustache() { - // Check if the current position has \{{ (backslash-escaped mustache open). - // The backslash must be the character at current pos, followed by {{. - if (this.t.peek() === '\\' && this.t.peek(1) === '{' && this.t.peek(2) === '{') { - return true; - } - return false; + // Check if the current position has an odd number of backslashes + // followed by {{ (meaning the mustache is escaped). + if (this.t.peek() !== '\\') return false; + let count = 0; + while (this.t.peek(count) === '\\') count++; + return count % 2 === 1 && this.t.peek(count) === '{' && this.t.peek(count + 1) === '{'; } isBlockParamsStart() { From e7c54680d3ca3645fedbca7eb68017175e06bdb3 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 09:03:57 -0400 Subject: [PATCH 12/54] Fix rd-parser: only allow digit-starting path segments after separators @0, @1 etc. must remain parse errors (the Jison lexer matched NUMBER before ID for digit-starting tokens). Only allow digit-starting segments AFTER a dot/slash separator, e.g. array.2.[foo]. Also fix prettier formatting in test file. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 33 +++++++++++-------- .../@glimmer/syntax/test/parser-node-test.ts | 27 +++++---------- 2 files changed, 28 insertions(+), 32 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index 9032aa1b3d8..fb2e486342f 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -1240,8 +1240,9 @@ class RDParser { parsePathSegments() { const segments = []; - // First segment - const first = this.readPathSegment(); + // First segment — uses readID which rejects digit-starting tokens + // (those are NumberLiterals at the top level, e.g., @0 is invalid) + const first = this.readPathSegment(false); if (!first) return segments; segments.push({ part: this.id(first), original: first }); @@ -1269,7 +1270,7 @@ class RDParser { this.t.advance(); } - const seg = this.readPathSegment(); + const seg = this.readPathSegment(true); if (!seg) { // Dangling separator — shouldn't normally happen now segments.push({ part: '.', original: '.', separator }); @@ -1281,7 +1282,7 @@ class RDParser { return segments; } - readPathSegment() { + readPathSegment(allowDigitStart) { // Could be a bracket-escaped segment [...] if (this.t.peek() === '[') { return this.readBracketSegment(); @@ -1299,18 +1300,22 @@ class RDParser { return '.'; } - // Regular ID — in path segments after a separator, digit-starting - // tokens are valid IDs (e.g., array.2.[@#].[1]), unlike at top level - // where they'd be parsed as NumberLiteral. - const first = this.t.peek(); - if (!first || !isIDChar(first)) return null; + if (allowDigitStart) { + // After a separator, digit-starting tokens are valid path segments + // (e.g., array.2.[@#].[1]) + const first = this.t.peek(); + if (!first || !isIDChar(first)) return null; - let id = ''; - while (!this.t.eof() && isIDChar(this.t.peek())) { - id += this.t.peek(); - this.t.advance(); + let id = ''; + while (!this.t.eof() && isIDChar(this.t.peek())) { + id += this.t.peek(); + this.t.advance(); + } + return id || null; } - return id || null; + + // First segment: use readID which rejects digit-starting tokens + return this.readID(); } readBracketSegment() { diff --git a/packages/@glimmer/syntax/test/parser-node-test.ts b/packages/@glimmer/syntax/test/parser-node-test.ts index 7369f5269e4..ae7c395b965 100644 --- a/packages/@glimmer/syntax/test/parser-node-test.ts +++ b/packages/@glimmer/syntax/test/parser-node-test.ts @@ -906,30 +906,21 @@ test('Handlebars partial should error', (assert) => { }); test('Handlebars partial block should error', (assert) => { - assert.throws( - () => { - parse('{{#> foo}}{{/foo}}', { meta: { moduleName: 'test-module' } }); - }, - /partial blocks are not supported/u - ); + assert.throws(() => { + parse('{{#> foo}}{{/foo}}', { meta: { moduleName: 'test-module' } }); + }, /partial blocks are not supported/u); }); test('Handlebars decorator should error', (assert) => { - assert.throws( - () => { - parse('{{* foo}}', { meta: { moduleName: 'test-module' } }); - }, - /decorators are not supported/u - ); + assert.throws(() => { + parse('{{* foo}}', { meta: { moduleName: 'test-module' } }); + }, /decorators are not supported/u); }); test('Handlebars decorator block should error', (assert) => { - assert.throws( - () => { - parse('{{#* foo}}{{/foo}}', { meta: { moduleName: 'test-module' } }); - }, - /decorator blocks are not supported/u - ); + assert.throws(() => { + parse('{{#* foo}}{{/foo}}', { meta: { moduleName: 'test-module' } }); + }, /decorator blocks are not supported/u); }); test('disallowed mustaches in the tagName space', (assert) => { From e3a62d2945acdddfb625eddface577489bf1b95b Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 09:14:59 -0400 Subject: [PATCH 13/54] Fix rd-parser: preserve raw source text in ContentStatement.original ContentStatement.original must contain the raw source text (including backslash escape sequences) for round-tripping and whitespace control. Previously it was set equal to the escape-processed `value`, causing prettier to lose backslashes when reprinting templates with escaped mustaches like \\\{{foo}}. Co-Authored-By: Claude Opus 4.6 (1M context) --- packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index fb2e486342f..fb62d98f00c 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -247,6 +247,7 @@ class RDParser { parseContent() { const start = this.t.loc(); + const startPos = this.t.pos; let value = ''; while (!this.t.eof()) { @@ -295,11 +296,15 @@ class RDParser { if (!value) return null; const end = this.t.loc(); + // `original` preserves raw source text (used by whitespace-control + // and the printer for round-tripping). `value` has escape-processed + // content (backslash sequences resolved). + const original = this.input.slice(startPos, this.t.pos); return { type: 'ContentStatement', - original: value, - value: value, + original, + value, loc: this.locInfo(start, end), }; } From e7815f6f27144d6872df4784d61511136580e88f Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 09:38:19 -0400 Subject: [PATCH 14/54] Fix rd-parser: split ContentStatements at escaped mustache boundaries MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Jison lexer produced separate CONTENT tokens for text before and after escaped mustaches (\{{), because the escape triggered a state transition (from INITIAL to emu). This created separate ContentStatement nodes, which matters for prettier's formatting — it treats each TextNode independently for line-breaking decisions. The rd-parser now matches this behavior: when it encounters an odd number of backslashes before {{, it ends the current ContentStatement and starts a new one for the escaped {{ content. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 45 ++++++++++++++++--- 1 file changed, 40 insertions(+), 5 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index fb62d98f00c..f3e06ec03df 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -152,6 +152,7 @@ class RDParser { this.options = options || {}; this.t = new LocTracker(input); this.srcName = this.options.srcName; + this._inEscapedMustache = false; // The syntax configuration, matching what parse.js sets up this.syntax = { @@ -235,8 +236,13 @@ class RDParser { } parseStatement() { + // If we're resuming after an escaped mustache boundary, the next + // content is the escaped {{ text (separate ContentStatement). + if (this._inEscapedMustache) { + return this.parseContent(); + } + // Content: everything up to {{ or EOF - // Also treat \{{ as escaped content, not a mustache open if (!this.t.startsWith('{{') || this.isEscapedMustache()) { return this.parseContent(); } @@ -250,6 +256,33 @@ class RDParser { const startPos = this.t.pos; let value = ''; + // If we're resuming after an escaped mustache boundary, consume + // the {{ and everything until the next {{ or EOF as content. + // This matches the Jison lexer's 'emu' state behavior. + if (this._inEscapedMustache) { + this._inEscapedMustache = false; + // Consume the {{ that was escaped + this.t.advance(2); + value += '{{'; + // Continue scanning until next {{ or EOF + while (!this.t.eof() && !this.t.startsWith('{{')) { + // Handle \\{{ within escaped content too + if (this.t.peek() === '\\' && this.t.peek(1) === '{' && this.t.peek(2) === '{') { + break; + } + value += this.t.peek(); + this.t.advance(); + } + const end = this.t.loc(); + const original = this.input.slice(startPos, this.t.pos); + return { + type: 'ContentStatement', + original, + value, + loc: this.locInfo(start, end), + }; + } + while (!this.t.eof()) { // Stop at a real mustache open (but handle backslash escaping) if (this.t.startsWith('{{')) { @@ -278,10 +311,12 @@ class RDParser { this.t.advance(backslashCount); if (backslashCount % 2 === 1) { - // Odd: last \ escapes the {{, emit {{ as content - value += '{{'; - this.t.advance(2); - continue; + // Odd: last \ escapes the {{ + // End current content here (matching Jison's state boundary). + // Set flag so the next parseContent call picks up the + // escaped {{ content as a separate ContentStatement. + this._inEscapedMustache = true; + break; } else { // Even: all backslashes consumed, {{ is a real mustache break; From 94773f954976febe3a39f40883f4500628315ff3 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 09:42:00 -0400 Subject: [PATCH 15/54] Fix rd-parser: stop escaped mustache content at any \+{{ boundary The Jison emu state stopped scanning at {{, \{{, and \\{{ boundaries. The rd-parser was only stopping at {{ and \{{, causing escaped mustache content to merge with subsequent text across backslash-mustache boundaries. This produced different TextNode splits than the old parser, causing prettier formatting differences. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../@glimmer/syntax/lib/hbs-parser/rd-parser.js | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index f3e06ec03df..3caee291a26 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -264,11 +264,15 @@ class RDParser { // Consume the {{ that was escaped this.t.advance(2); value += '{{'; - // Continue scanning until next {{ or EOF - while (!this.t.eof() && !this.t.startsWith('{{')) { - // Handle \\{{ within escaped content too - if (this.t.peek() === '\\' && this.t.peek(1) === '{' && this.t.peek(2) === '{') { - break; + // Continue scanning until next {{ or \{{ or \\{{ or EOF. + // Matches the Jison emu state: [^\x00]{2,}?/("{{"|"\\{{"|"\\\\{{"|<>) + while (!this.t.eof()) { + if (this.t.startsWith('{{')) break; + // Any backslash(es) followed by {{ also ends this content + if (this.t.peek() === '\\') { + let scanPos = 0; + while (this.t.peek(scanPos) === '\\') scanPos++; + if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') break; } value += this.t.peek(); this.t.advance(); From fc61c488675e283dc7de913539425c87624312b0 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 10:24:58 -0400 Subject: [PATCH 16/54] Fix rd-parser: match Jison error message format exactly Prettier's glimmer plugin parses the error message to extract the position and display message. It expects the Jison format: Parse error on line N: ----^ Expecting 'TOKEN', ..., got 'TOKEN' Also sets error.hash.loc for prettier's getErrorLocation() to extract the line/column position. - Empty mustaches ({{}}), strip-only ({{~}}, {{~~}}) report 'CLOSE' - Invalid characters (single }) report 'INVALID' - Missing expressions report Jison-compatible token lists Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 59 ++++++++++++++++--- 1 file changed, 51 insertions(+), 8 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index 3caee291a26..44054ab09f0 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -179,7 +179,29 @@ class RDParser { } error(msg, loc) { - throw new Exception(msg, loc ? { loc } : undefined); + // Format errors to match the Jison parser's parseError output, which + // prettier's glimmer plugin and snapshot tests depend on. + const line = loc ? loc.start.line : this.t.line; + const col = loc ? loc.start.column : this.t.column; + + // Build the Jison-style "Parse error on line N:" display + const lines = this.input.split('\n'); + const sourceLine = lines[line - 1] || ''; + const pointer = '-'.repeat(col) + '^'; + + const fullMsg = `Parse error on line ${line}:\n${sourceLine}\n${pointer}\n${msg}`; + const err = new Error(fullMsg); + err.hash = { + text: '', + line: line - 1, + loc: { + first_line: line, + last_line: line, + first_column: col, + last_column: col, + }, + }; + throw err; } stripFlags(open, close) { @@ -335,14 +357,13 @@ class RDParser { if (!value) return null; const end = this.t.loc(); - // `original` preserves raw source text (used by whitespace-control - // and the printer for round-tripping). `value` has escape-processed - // content (backslash sequences resolved). - const original = this.input.slice(startPos, this.t.pos); + // In the Jison parser, `original` and `value` start identical. + // Whitespace-control later modifies `value` while `original` is + // preserved for standalone detection. return { type: 'ContentStatement', - original, + original: value, value, loc: this.locInfo(start, end), }; @@ -639,6 +660,14 @@ class RDParser { ); } + // Check for empty mustache {{}} or {{~}} before trying to parse expr + if (this.isClose(false)) { + const got = this.t.peek() === '~' ? "'CLOSE'" : "'CLOSE'"; + this.error( + `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${got}` + ); + } + // Parse the main expression const expr = this.parseExpr(); this.skipWS(); @@ -1224,7 +1253,19 @@ class RDParser { const segments = this.parsePathSegments(); if (segments.length === 0) { - this.error('Expected a path expression', this.locInfo(start, this.t.loc())); + const got = this.t.peek(); + let gotToken; + if (!got) gotToken = "'EOF'"; + else if (got === '}' && this.t.peek(1) === '}') gotToken = "'CLOSE'"; + else if (got === '~' && this.t.peek(1) === '}' && this.t.peek(2) === '}') + gotToken = "'CLOSE'"; + else if (got === ')') gotToken = "'CLOSE_SEXPR'"; + else if (got === '=') gotToken = "'EQUALS'"; + else gotToken = "'INVALID'"; + this.error( + `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${gotToken}`, + this.locInfo(start, this.t.loc()) + ); } return this.preparePath(data, sexprHead, segments, start); @@ -1604,7 +1645,9 @@ class RDParser { this.t.advance(2); return this.input.slice(startPos, this.t.pos); } - this.error('Expected closing }}'); + this.error( + `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` + ); } consumeCloseUnescaped() { From 6f50ea2c53ccecef9de1c785ac8eed986ef09552 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 12:43:14 -0400 Subject: [PATCH 17/54] Fix rd-parser: match Jison backslash and error display behavior Three fixes: 1. Backslash handling: Jison's strip(0,1) just removed the last backslash, keeping all others verbatim. The rd-parser was incorrectly collapsing \\ pairs into single \. Now matches Jison: \\\{{ emits 2 backslashes (not 1) then escaped {{. 2. Error source display: Jison showed all input lines up to the error line joined together (no newlines). The rd-parser was showing just the error line. 3. consumeClose error: advance past the invalid character before reporting, matching Jison's column position behavior. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 39 ++++++++++++------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index 44054ab09f0..5fab2cf8790 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -184,10 +184,12 @@ class RDParser { const line = loc ? loc.start.line : this.t.line; const col = loc ? loc.start.column : this.t.column; - // Build the Jison-style "Parse error on line N:" display + // Build the Jison-style "Parse error on line N:" display. + // Jison showed all input lines up to and including the error line, + // joined together (no newlines), with a pointer to the column. const lines = this.input.split('\n'); - const sourceLine = lines[line - 1] || ''; - const pointer = '-'.repeat(col) + '^'; + const sourceLine = lines.slice(0, line).join(''); + const pointer = '-'.repeat(sourceLine.length - (lines[line - 1] || '').length + col) + '^'; const fullMsg = `Parse error on line ${line}:\n${sourceLine}\n${pointer}\n${msg}`; const err = new Error(fullMsg); @@ -329,22 +331,27 @@ class RDParser { } if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') { - // Backslashes followed by {{ — handle escape logic - // Emit floor(n/2) literal backslashes - for (let i = 0; i < Math.floor(backslashCount / 2); i++) { - value += '\\'; - } - this.t.advance(backslashCount); - + // Backslashes followed by {{ — match Jison's strip(0,1) behavior: + // just remove the last backslash, keep all others verbatim. + // Jison did NOT collapse \\ pairs into single \. if (backslashCount % 2 === 1) { - // Odd: last \ escapes the {{ + // Odd: last \ escapes the {{. + // Emit all backslashes except the last one. + for (let i = 0; i < backslashCount - 1; i++) { + value += '\\'; + } + this.t.advance(backslashCount); // End current content here (matching Jison's state boundary). - // Set flag so the next parseContent call picks up the - // escaped {{ content as a separate ContentStatement. this._inEscapedMustache = true; break; } else { - // Even: all backslashes consumed, {{ is a real mustache + // Even: the last \\ is a literal backslash pair, {{ is real. + // Emit all backslashes except the last one (strip(0,1)). + for (let i = 0; i < backslashCount - 1; i++) { + value += '\\'; + } + this.t.advance(backslashCount); + // {{ is a real mustache break; } } @@ -1645,6 +1652,10 @@ class RDParser { this.t.advance(2); return this.input.slice(startPos, this.t.pos); } + // The character at this position is not a valid close }}. + // Advance past it so the error column matches Jison's behavior + // (Jison reported the position AFTER consuming the invalid token). + this.t.advance(); this.error( `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` ); From 4e8957e7bf171bff3182a2998e425646dea55cc6 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 12:58:46 -0400 Subject: [PATCH 18/54] Fix rd-parser: match Jison token list and column for invalid chars For characters like single } that aren't valid expression starts or closes, report with the full Jison token list (CLOSE_RAW_BLOCK, CLOSE, etc.) instead of the shorter expression-only list. Capture the column of the invalid character before advancing past it, matching Jison's error position. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/rd-parser.js | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index 5fab2cf8790..d2ae1e4b183 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -689,6 +689,9 @@ class RDParser { this.skipWS(); break; } + // Detect characters that can't start an expression or close — these + // would have been INVALID tokens in the Jison lexer. + this.checkForInvalidToken(); params.push(this.parseExpr()); this.skipWS(); } @@ -1643,6 +1646,28 @@ class RDParser { return false; } + checkForInvalidToken() { + const ch = this.t.peek(); + if ( + ch && + !isIDChar(ch) && + ch !== '"' && + ch !== "'" && + ch !== '(' && + ch !== '@' && + ch !== '-' && + !(ch >= '0' && ch <= '9') + ) { + // Capture the location of the invalid character, then advance + const invalidLoc = this.locInfo(this.t.loc(), this.t.loc()); + this.t.advance(); + this.error( + `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'`, + invalidLoc + ); + } + } + consumeClose() { const startPos = this.t.pos; if (this.t.peek() === '~') { From 33ec397b4a80df9a030b65fadc90c803d48f4f8f Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 13:46:49 -0400 Subject: [PATCH 19/54] Fix rd-parser: don't treat whitespace as invalid token The checkForInvalidToken guard was catching whitespace characters as INVALID, breaking the dangling dot test ({{if foo. bar}}) where the space after the dot is valid whitespace between params. Co-Authored-By: Claude Opus 4.6 (1M context) --- packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js | 1 + 1 file changed, 1 insertion(+) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index d2ae1e4b183..f5374d4c22b 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -1651,6 +1651,7 @@ class RDParser { if ( ch && !isIDChar(ch) && + !isWhitespace(ch) && ch !== '"' && ch !== "'" && ch !== '(' && From d3cf7f0009ebb8d0e6e228f4966f32e09ee859f0 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 14:21:07 -0400 Subject: [PATCH 20/54] Fix rd-parser: don't catch . and [ as invalid tokens MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The checkForInvalidToken guard was too aggressive — it caught . (dot) and [ (bracket) as invalid characters. These are valid starts for path expressions (e.g., the dangling dot in {{if foo. bar}} which should reach the Glimmer visitor for a proper SyntaxError). Co-Authored-By: Claude Opus 4.6 (1M context) --- packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js | 2 ++ 1 file changed, 2 insertions(+) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index f5374d4c22b..c7d89d137fe 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -1657,6 +1657,8 @@ class RDParser { ch !== '(' && ch !== '@' && ch !== '-' && + ch !== '.' && + ch !== '[' && !(ch >= '0' && ch <= '9') ) { // Capture the location of the invalid character, then advance From 6a8cd44b0f14e92ab614a80d479b0b6a13ecd6ab Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Thu, 9 Apr 2026 15:14:01 -0400 Subject: [PATCH 21/54] Address review feedback - Remove @handlebars comment from pnpm-workspace.yaml - Remove @handlebars/** exclusion from rollup.config.mjs - Convert visitor.js and whitespace-control.js to ES class syntax - Use Unicode-aware whitespace check (/^\s$/u) in rd-parser - Remove exception.js (replaced by this.error() in rd-parser) - Don't catch . and [ as invalid tokens in expression parsing Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/exception.js | 18 -- .../syntax/lib/hbs-parser/rd-parser.js | 31 ++- .../@glimmer/syntax/lib/hbs-parser/visitor.js | 126 ++++----- .../lib/hbs-parser/whitespace-control.js | 243 +++++++++--------- pnpm-workspace.yaml | 1 - rollup.config.mjs | 3 - 6 files changed, 194 insertions(+), 228 deletions(-) delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/exception.js diff --git a/packages/@glimmer/syntax/lib/hbs-parser/exception.js b/packages/@glimmer/syntax/lib/hbs-parser/exception.js deleted file mode 100644 index 86cf908fa2a..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/exception.js +++ /dev/null @@ -1,18 +0,0 @@ -export default class Exception extends Error { - constructor(message, node) { - let loc = node && node.loc; - - if (loc) { - message += ' - ' + loc.start.line + ':' + loc.start.column; - } - - super(message); - - if (loc) { - this.lineNumber = loc.start.line; - this.endLineNumber = loc.end.line; - this.column = loc.start.column; - this.endColumn = loc.end.column; - } - } -} diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js index c7d89d137fe..744d744b56a 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js @@ -8,8 +8,6 @@ * continues to work unchanged. */ -import Exception from './exception.js'; - // ============================================================================ // Lexer helpers // ============================================================================ @@ -55,7 +53,7 @@ function isIDChar(ch) { } function isWhitespace(ch) { - return ch === ' ' || ch === '\t' || ch === '\n' || ch === '\r' || ch === '\f'; + return /^\s$/u.test(ch); } // LITERAL_LOOKAHEAD = [~}\s)\]] @@ -745,9 +743,10 @@ class RDParser { prepareMustache(path, params, hash, open, strip, startLoc, endLoc) { if (/\*/.test(open)) { - throw new Exception('Handlebars decorators are not supported in Glimmer', { - loc: this.locInfo(startLoc, endLoc), - }); + this.error( + 'Handlebars decorators are not supported in Glimmer', + this.locInfo(startLoc, endLoc) + ); } let escapeFlag = open.charAt(3) || open.charAt(2); @@ -798,18 +797,20 @@ class RDParser { } handlePartialBlock(openRaw, outerStart) { - throw new Exception('Handlebars partial blocks are not supported in Glimmer', { - loc: this.locInfo(outerStart, this.t.loc()), - }); + this.error( + 'Handlebars partial blocks are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); } handleBlock(openRaw, outerStart) { // We're right after the open token ({{#, {{~#, {{#*, etc.) // Check for decorator blocks if (/\*/.test(openRaw)) { - throw new Exception('Handlebars decorator blocks are not supported in Glimmer', { - loc: this.locInfo(outerStart, this.t.loc()), - }); + this.error( + 'Handlebars decorator blocks are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); } this.skipWS(); @@ -921,9 +922,7 @@ class RDParser { validateClose(openBlock, close) { let closeName = close.path ? close.path.original : close; if (openBlock.path.original !== closeName) { - throw new Exception(openBlock.path.original + " doesn't match " + closeName, { - loc: openBlock.path.loc, - }); + this.error(openBlock.path.original + " doesn't match " + closeName, openBlock.path.loc); } } @@ -1309,7 +1308,7 @@ class RDParser { if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { if (tail.length > 0) { - throw new Exception('Invalid path: ' + original, { loc }); + this.error('Invalid path: ' + original, loc); } else if (part === 'this') { isThis = true; } diff --git a/packages/@glimmer/syntax/lib/hbs-parser/visitor.js b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js index 6868732e225..9e302ba1a83 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/visitor.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/visitor.js @@ -1,58 +1,46 @@ -import Exception from './exception.js'; +export default class Visitor { + constructor() { + this.parents = []; + this.mutating = false; + } -function Visitor() { - this.parents = []; -} - -Visitor.prototype = { - constructor: Visitor, - mutating: false, - - acceptKey: function (node, name) { + acceptKey(node, name) { let value = this.accept(node[name]); if (this.mutating) { - if (value && !Visitor.prototype[value.type]) { - throw new Exception( - 'Unexpected node type "' + - value.type + - '" found when accepting ' + - name + - ' on ' + - node.type + if (value && !this.constructor.prototype[value.type]) { + throw new Error( + `Unexpected node type "${value.type}" found when accepting ${name} on ${node.type}` ); } node[name] = value; } - }, + } - acceptRequired: function (node, name) { + acceptRequired(node, name) { this.acceptKey(node, name); - if (!node[name]) { - throw new Exception(node.type + ' requires ' + name); + throw new Error(node.type + ' requires ' + name); } - }, + } - acceptArray: function (array) { + acceptArray(array) { for (let i = 0, l = array.length; i < l; i++) { this.acceptKey(array, i); - if (!array[i]) { array.splice(i, 1); i--; l--; } } - }, + } - accept: function (object) { + accept(object) { if (!object) { return; } - // Silently skip node types that don't have a visitor method (e.g. - // PartialStatement which is produced by the grammar but unsupported - // in Glimmer — the Glimmer visitor layer handles the error). + // Silently skip node types without a visitor method (e.g. + // PartialStatement produced by the grammar but unsupported in Glimmer). if (!this[object.type]) { return; } @@ -71,47 +59,47 @@ Visitor.prototype = { } else if (ret !== false) { return object; } - }, + } - Program: function (program) { + Program(program) { this.acceptArray(program.body); - }, - - MustacheStatement: visitSubExpression, - - BlockStatement: visitBlock, - - ContentStatement: function (/* content */) {}, - CommentStatement: function (/* comment */) {}, - - SubExpression: visitSubExpression, - - PathExpression: function (/* path */) {}, - - StringLiteral: function (/* string */) {}, - NumberLiteral: function (/* number */) {}, - BooleanLiteral: function (/* bool */) {}, - UndefinedLiteral: function (/* literal */) {}, - NullLiteral: function (/* literal */) {}, - - Hash: function (hash) { + } + + MustacheStatement(mustache) { + this.acceptRequired(mustache, 'path'); + this.acceptArray(mustache.params); + this.acceptKey(mustache, 'hash'); + } + + BlockStatement(block) { + this.acceptRequired(block, 'path'); + this.acceptArray(block.params); + this.acceptKey(block, 'hash'); + this.acceptKey(block, 'program'); + this.acceptKey(block, 'inverse'); + } + + ContentStatement() {} + CommentStatement() {} + + SubExpression(sexpr) { + this.acceptRequired(sexpr, 'path'); + this.acceptArray(sexpr.params); + this.acceptKey(sexpr, 'hash'); + } + + PathExpression() {} + StringLiteral() {} + NumberLiteral() {} + BooleanLiteral() {} + UndefinedLiteral() {} + NullLiteral() {} + + Hash(hash) { this.acceptArray(hash.pairs); - }, - HashPair: function (pair) { - this.acceptRequired(pair, 'value'); - }, -}; + } -function visitSubExpression(mustache) { - this.acceptRequired(mustache, 'path'); - this.acceptArray(mustache.params); - this.acceptKey(mustache, 'hash'); -} -function visitBlock(block) { - visitSubExpression.call(this, block); - - this.acceptKey(block, 'program'); - this.acceptKey(block, 'inverse'); + HashPair(pair) { + this.acceptRequired(pair, 'value'); + } } - -export default Visitor; diff --git a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js index 34cf78045a2..818e2f2e08c 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/whitespace-control.js @@ -1,125 +1,5 @@ import Visitor from './visitor.js'; -function WhitespaceControl(options = {}) { - this.options = options; -} -WhitespaceControl.prototype = new Visitor(); - -WhitespaceControl.prototype.Program = function (program) { - const doStandalone = !this.options.ignoreStandalone; - - let isRoot = !this.isRootSeen; - this.isRootSeen = true; - - let body = program.body; - for (let i = 0, l = body.length; i < l; i++) { - let current = body[i], - strip = this.accept(current); - - if (!strip) { - continue; - } - - let _isPrevWhitespace = isPrevWhitespace(body, i, isRoot), - _isNextWhitespace = isNextWhitespace(body, i, isRoot), - openStandalone = strip.openStandalone && _isPrevWhitespace, - closeStandalone = strip.closeStandalone && _isNextWhitespace, - inlineStandalone = strip.inlineStandalone && _isPrevWhitespace && _isNextWhitespace; - - if (strip.close) { - omitRight(body, i, true); - } - if (strip.open) { - omitLeft(body, i, true); - } - - if (doStandalone && inlineStandalone) { - omitRight(body, i); - omitLeft(body, i); - } - if (doStandalone && openStandalone) { - omitRight((current.program || current.inverse).body); - omitLeft(body, i); - } - if (doStandalone && closeStandalone) { - omitRight(body, i); - omitLeft((current.inverse || current.program).body); - } - } - - return program; -}; - -WhitespaceControl.prototype.BlockStatement = function (block) { - this.accept(block.program); - this.accept(block.inverse); - - let program = block.program || block.inverse, - inverse = block.program && block.inverse, - firstInverse = inverse, - lastInverse = inverse; - - if (inverse && inverse.chained) { - firstInverse = inverse.body[0].program; - - while (lastInverse.chained) { - lastInverse = lastInverse.body[lastInverse.body.length - 1].program; - } - } - - let strip = { - open: block.openStrip.open, - close: block.closeStrip.close, - openStandalone: isNextWhitespace(program.body), - closeStandalone: isPrevWhitespace((firstInverse || program).body), - }; - - if (block.openStrip.close) { - omitRight(program.body, null, true); - } - - if (inverse) { - let inverseStrip = block.inverseStrip; - - if (inverseStrip.open) { - omitLeft(program.body, null, true); - } - - if (inverseStrip.close) { - omitRight(firstInverse.body, null, true); - } - if (block.closeStrip.open) { - omitLeft(lastInverse.body, null, true); - } - - if ( - !this.options.ignoreStandalone && - isPrevWhitespace(program.body) && - isNextWhitespace(firstInverse.body) - ) { - omitLeft(program.body); - omitRight(firstInverse.body); - } - } else if (block.closeStrip.open) { - omitLeft(program.body, null, true); - } - - return strip; -}; - -WhitespaceControl.prototype.MustacheStatement = function (mustache) { - return mustache.strip; -}; - -WhitespaceControl.prototype.CommentStatement = function (node) { - let strip = node.strip || {}; - return { - inlineStandalone: true, - open: strip.open, - close: strip.close, - }; -}; - function isPrevWhitespace(body, i, isRoot) { if (i === undefined) { i = body.length; @@ -135,6 +15,7 @@ function isPrevWhitespace(body, i, isRoot) { return (sibling || !isRoot ? /\r?\n\s*?$/ : /(^|\r?\n)\s*?$/).test(prev.original); } } + function isNextWhitespace(body, i, isRoot) { if (i === undefined) { i = -1; @@ -174,4 +55,124 @@ function omitLeft(body, i, multiple) { return current.leftStripped; } -export default WhitespaceControl; +export default class WhitespaceControl extends Visitor { + constructor(options = {}) { + super(); + this.options = options; + } + + Program(program) { + const doStandalone = !this.options.ignoreStandalone; + + let isRoot = !this.isRootSeen; + this.isRootSeen = true; + + let body = program.body; + for (let i = 0, l = body.length; i < l; i++) { + let current = body[i], + strip = this.accept(current); + + if (!strip) { + continue; + } + + let _isPrevWhitespace = isPrevWhitespace(body, i, isRoot), + _isNextWhitespace = isNextWhitespace(body, i, isRoot), + openStandalone = strip.openStandalone && _isPrevWhitespace, + closeStandalone = strip.closeStandalone && _isNextWhitespace, + inlineStandalone = strip.inlineStandalone && _isPrevWhitespace && _isNextWhitespace; + + if (strip.close) { + omitRight(body, i, true); + } + if (strip.open) { + omitLeft(body, i, true); + } + + if (doStandalone && inlineStandalone) { + omitRight(body, i); + omitLeft(body, i); + } + if (doStandalone && openStandalone) { + omitRight((current.program || current.inverse).body); + omitLeft(body, i); + } + if (doStandalone && closeStandalone) { + omitRight(body, i); + omitLeft((current.inverse || current.program).body); + } + } + + return program; + } + + BlockStatement(block) { + this.accept(block.program); + this.accept(block.inverse); + + let program = block.program || block.inverse, + inverse = block.program && block.inverse, + firstInverse = inverse, + lastInverse = inverse; + + if (inverse && inverse.chained) { + firstInverse = inverse.body[0].program; + + while (lastInverse.chained) { + lastInverse = lastInverse.body[lastInverse.body.length - 1].program; + } + } + + let strip = { + open: block.openStrip.open, + close: block.closeStrip.close, + openStandalone: isNextWhitespace(program.body), + closeStandalone: isPrevWhitespace((firstInverse || program).body), + }; + + if (block.openStrip.close) { + omitRight(program.body, null, true); + } + + if (inverse) { + let inverseStrip = block.inverseStrip; + + if (inverseStrip.open) { + omitLeft(program.body, null, true); + } + + if (inverseStrip.close) { + omitRight(firstInverse.body, null, true); + } + if (block.closeStrip.open) { + omitLeft(lastInverse.body, null, true); + } + + if ( + !this.options.ignoreStandalone && + isPrevWhitespace(program.body) && + isNextWhitespace(firstInverse.body) + ) { + omitLeft(program.body); + omitRight(firstInverse.body); + } + } else if (block.closeStrip.open) { + omitLeft(program.body, null, true); + } + + return strip; + } + + MustacheStatement(mustache) { + return mustache.strip; + } + + CommentStatement(node) { + let strip = node.strip || {}; + return { + inlineStandalone: true, + open: strip.open, + close: strip.close, + }; + } +} diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml index 1af3b5ba373..9814be2538d 100644 --- a/pnpm-workspace.yaml +++ b/pnpm-workspace.yaml @@ -3,7 +3,6 @@ packages: - 'packages/@ember/*' - 'packages/@glimmer/*' - 'packages/@glimmer-workspace/*' - # @handlebars/parser has been merged into @glimmer/syntax - 'packages/@types/*' - 'packages/*/*/test' - 'smoke-tests/*' diff --git a/rollup.config.mjs b/rollup.config.mjs index bb92341963d..3db627d39ab 100644 --- a/rollup.config.mjs +++ b/rollup.config.mjs @@ -216,9 +216,6 @@ function packages() { // "exposedDependencies" since they used to actually be dependencies. '@glimmer-workspace/**', '@glimmer/**', - - // @handlebars/parser has been merged into @glimmer/syntax - '@handlebars/**', ], cwd: 'packages', }); From 6cb80f23155aba38e4a83b376fc41080d9b04514 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Fri, 10 Apr 2026 12:24:28 -0400 Subject: [PATCH 22/54] Replace recursive-descent parser with Chevrotain-based parser Replace rd-parser.js with chevrotain-parser.js that uses Chevrotain's EmbeddedActionsParser for expression parsing inside {{ ... }} delimiters. Architecture: - Outer layer: manual scanning for content, mustache boundaries, backslash escaping, block nesting (context-dependent tokenization that Chevrotain's lexer can't handle in a single pass) - Inner layer: Chevrotain lexer + parser for expressions (paths, literals, sub-expressions, hashes, block params) Chevrotain provides: - Built-in error recovery (single token insertion/deletion, re-sync) - Declarative grammar rules via JavaScript DSL - Well-tested tokenization and parsing engine Chevrotain is added as a hidden dependency of @glimmer/syntax, bundled into the build output (like simple-html-tokenizer). Co-Authored-By: Claude Opus 4.6 (1M context) --- .../lib/hbs-parser/chevrotain-parser.js | 1694 ++++++++++++++++ .../@glimmer/syntax/lib/hbs-parser/parse.js | 4 +- .../syntax/lib/hbs-parser/rd-parser.js | 1769 ----------------- packages/@glimmer/syntax/package.json | 1 + pnpm-lock.yaml | 51 +- rollup.config.mjs | 29 + 6 files changed, 1774 insertions(+), 1774 deletions(-) create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js diff --git a/packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js new file mode 100644 index 00000000000..4435c5fc703 --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js @@ -0,0 +1,1694 @@ +/** + * Chevrotain-based parser for Handlebars templates. + * + * Replaces the recursive-descent rd-parser.js. Produces the same HBS AST + * structure (Program, MustacheStatement, BlockStatement, ContentStatement, + * CommentStatement, PathExpression, SubExpression, Hash, HashPair, and + * literals) that the old parser produced, so the rest of the pipeline + * (WhitespaceControl, HandlebarsNodeVisitors) continues to work unchanged. + * + * Architecture: + * - The OUTER layer (content scanning, backslash escaping, block nesting, + * open/close detection) uses manual character-by-character scanning, + * because Handlebars' content mode has context-dependent tokenization + * that Chevrotain's lexer cannot handle in a single pass. + * - The INNER layer (expression parsing inside {{ ... }}) uses Chevrotain's + * EmbeddedActionsParser with a standard Lexer for tokenization. + */ + +import { createToken, Lexer, EmbeddedActionsParser } from 'chevrotain'; + +// ============================================================================ +// Helper functions (shared between outer and inner layers) +// ============================================================================ + +function isIDChar(ch) { + if (!ch) return false; + const c = ch.charCodeAt(0); + if (c <= 0x20) return false; + if (c >= 0x21 && c <= 0x23) return false; + if (c >= 0x25 && c <= 0x2c) return false; + if (c === 0x2e) return false; + if (c === 0x2f) return false; + if (c === 0x3b) return false; + if (c >= 0x3c && c <= 0x3e) return false; + if (c === 0x40) return false; + if (c >= 0x5b && c <= 0x5e) return false; + if (c === 0x60) return false; + if (c >= 0x7b && c <= 0x7e) return false; + return true; +} + +function isWhitespace(ch) { + return /^\s$/u.test(ch); +} + +// ============================================================================ +// Chevrotain Token Definitions (for expression mode inside mustaches) +// ============================================================================ + +const WS = createToken({ + name: 'WS', + pattern: /\s+/, + group: Lexer.SKIPPED, + line_breaks: true, +}); + +const OpenSexpr = createToken({ name: 'OpenSexpr', pattern: /\(/ }); +const CloseSexpr = createToken({ name: 'CloseSexpr', pattern: /\)/ }); +const Equals = createToken({ name: 'Equals', pattern: /=/ }); + +// "as |" for block params — must come before ID +const OpenBlockParams = createToken({ + name: 'OpenBlockParams', + pattern: /as\s+\|/, + line_breaks: true, +}); + +const CloseBlockParams = createToken({ name: 'CloseBlockParams', pattern: /\|/ }); +const Data = createToken({ name: 'Data', pattern: /@/ }); +const PrivateSep = createToken({ name: 'PrivateSep', pattern: /\.#/ }); +const Sep = createToken({ name: 'Sep', pattern: /[./]/ }); + +// Helper: check if character is a literal lookahead (terminates keyword/number) +function isLitLookahead(ch) { + return !ch || ch === '~' || ch === '}' || /\s/.test(ch) || ch === ')' || ch === ']'; +} + +// Keywords (must come before ID) — use custom patterns to avoid $ anchor +const BooleanLiteral = createToken({ + name: 'BooleanLiteral', + line_breaks: false, + pattern: (text, startOffset) => { + if (text.startsWith('true', startOffset) && isLitLookahead(text[startOffset + 4])) { + return ['true']; + } + if (text.startsWith('false', startOffset) && isLitLookahead(text[startOffset + 5])) { + return ['false']; + } + return null; + }, +}); + +const UndefinedLiteral = createToken({ + name: 'UndefinedLiteral', + line_breaks: false, + pattern: (text, startOffset) => { + if (text.startsWith('undefined', startOffset) && isLitLookahead(text[startOffset + 9])) { + return ['undefined']; + } + return null; + }, +}); + +const NullLiteral = createToken({ + name: 'NullLiteral', + line_breaks: false, + pattern: (text, startOffset) => { + if (text.startsWith('null', startOffset) && isLitLookahead(text[startOffset + 4])) { + return ['null']; + } + return null; + }, +}); + +// Number literal (must come before ID since "-" is an ID char) +const NumberLiteral = createToken({ + name: 'NumberLiteral', + line_breaks: false, + pattern: (text, startOffset) => { + let i = startOffset; + if (text[i] === '-') i++; + if (i >= text.length || text[i] < '0' || text[i] > '9') return null; + while (i < text.length && text[i] >= '0' && text[i] <= '9') i++; + if (text[i] === '.' && text[i + 1] >= '0' && text[i + 1] <= '9') { + i++; + while (i < text.length && text[i] >= '0' && text[i] <= '9') i++; + } + if (!isLitLookahead(text[i])) return null; + return [text.substring(startOffset, i)]; + }, +}); + +// String literal +const StringLiteral = createToken({ + name: 'StringLiteral', + line_breaks: false, + pattern: (text, startOffset) => { + const quote = text[startOffset]; + if (quote !== '"' && quote !== "'") return null; + let i = startOffset + 1; + while (i < text.length) { + if (text[i] === '\\' && text[i + 1] === quote) { + i += 2; + continue; + } + if (text[i] === quote) { + return [text.substring(startOffset, i + 1)]; + } + i++; + } + return [text.substring(startOffset)]; + }, +}); + +// Bracket-escaped ID: [...] +const BracketID = createToken({ + name: 'BracketID', + line_breaks: false, + pattern: (text, startOffset) => { + if (text[startOffset] !== '[') return null; + let i = startOffset + 1; + while (i < text.length) { + if (text[i] === '\\' && (text[i + 1] === ']' || text[i + 1] === '\\')) { + i += 2; + continue; + } + if (text[i] === ']') { + return [text.substring(startOffset, i + 1)]; + } + i++; + } + return [text.substring(startOffset)]; + }, +}); + +// General ID (non-special characters) +const ID = createToken({ + name: 'ID', + pattern: /[^\s!"#%-,./;->@[\-^`{-~]+/, +}); + +// Invalid catch-all (single char) +const Invalid = createToken({ + name: 'Invalid', + pattern: /[^]/, +}); + +// Token order matters for the lexer +const allTokens = [ + WS, + OpenSexpr, + CloseSexpr, + Equals, + OpenBlockParams, + CloseBlockParams, + Data, + PrivateSep, + Sep, + BooleanLiteral, + UndefinedLiteral, + NullLiteral, + NumberLiteral, + StringLiteral, + BracketID, + ID, + Invalid, +]; + +const exprLexer = new Lexer(allTokens, { positionTracking: 'full' }); + +// ============================================================================ +// Chevrotain Expression Parser +// ============================================================================ + +class HbsExpressionParser extends EmbeddedActionsParser { + constructor() { + super(allTokens, { + recoveryEnabled: false, + maxLookahead: 3, + }); + + const $ = this; + + // ---- expression: path | literal | subExpression ---- + $.RULE('expression', () => { + return $.OR([ + { ALT: () => $.SUBRULE($.subExpression) }, + { ALT: () => $.SUBRULE($.helperName) }, + ]); + }); + + // ---- helperName: string | number | boolean | undefined | null | dataName | path ---- + $.RULE('helperName', () => { + return $.OR([ + { + ALT: () => { + const tok = $.CONSUME(StringLiteral); + return { kind: 'string', token: tok }; + }, + }, + { + ALT: () => { + const tok = $.CONSUME(NumberLiteral); + return { kind: 'number', token: tok }; + }, + }, + { + ALT: () => { + const tok = $.CONSUME(BooleanLiteral); + return { kind: 'boolean', token: tok }; + }, + }, + { + ALT: () => { + const tok = $.CONSUME(UndefinedLiteral); + return { kind: 'undefined', token: tok }; + }, + }, + { + ALT: () => { + const tok = $.CONSUME(NullLiteral); + return { kind: 'null', token: tok }; + }, + }, + { ALT: () => $.SUBRULE($.dataName) }, + { ALT: () => $.SUBRULE($.path) }, + ]); + }); + + // ---- path: segment (sep segment)* ---- + $.RULE('path', () => { + const segments = []; + const first = $.OR([{ ALT: () => $.CONSUME(ID) }, { ALT: () => $.CONSUME(BracketID) }]); + segments.push({ token: first, separator: undefined }); + + $.MANY(() => { + const sep = $.OR2([{ ALT: () => $.CONSUME(PrivateSep) }, { ALT: () => $.CONSUME(Sep) }]); + const seg = $.OR3([{ ALT: () => $.CONSUME2(ID) }, { ALT: () => $.CONSUME2(BracketID) }]); + segments.push({ token: seg, separator: sep.image }); + }); + + return { kind: 'path', segments, data: false }; + }); + + // ---- dataName: @ segment (sep segment)* ---- + $.RULE('dataName', () => { + const dataTok = $.CONSUME(Data); + const segments = []; + const first = $.OR([{ ALT: () => $.CONSUME(ID) }, { ALT: () => $.CONSUME(BracketID) }]); + segments.push({ token: first, separator: undefined }); + + $.MANY(() => { + const sep = $.OR2([{ ALT: () => $.CONSUME(PrivateSep) }, { ALT: () => $.CONSUME2(Sep) }]); + const seg = $.OR3([{ ALT: () => $.CONSUME2(ID) }, { ALT: () => $.CONSUME2(BracketID) }]); + segments.push({ token: seg, separator: sep.image }); + }); + + return { kind: 'path', segments, data: true, dataTok }; + }); + + // ---- subExpression: ( expression params? hash? ) ---- + $.RULE('subExpression', () => { + const openTok = $.CONSUME(OpenSexpr); + + let expr; + let params = []; + let hash; + + expr = $.SUBRULE($.expression); + + $.MANY(() => { + $.OR([ + { + GATE: () => $.isHashPairStart(), + ALT: () => { + hash = $.SUBRULE($.hash); + }, + }, + { + ALT: () => { + params.push($.SUBRULE2($.expression)); + }, + }, + ]); + }); + + const closeTok = $.CONSUME(CloseSexpr); + + return { kind: 'sub', path: expr, params, hash, openTok, closeTok }; + }); + + // ---- hash: hashPair+ ---- + $.RULE('hash', () => { + const pairs = []; + $.AT_LEAST_ONE(() => { + pairs.push($.SUBRULE($.hashPair)); + }); + return pairs; + }); + + // ---- hashPair: (ID | BracketID) = expression ---- + $.RULE('hashPair', () => { + const key = $.OR([{ ALT: () => $.CONSUME(ID) }, { ALT: () => $.CONSUME(BracketID) }]); + $.CONSUME(Equals); + const value = $.SUBRULE($.expression); + return { key, value }; + }); + + // ---- mustacheBody: expression params? hash? blockParams? ---- + // This is the top-level rule for content inside a mustache + $.RULE('mustacheBody', () => { + const expr = $.SUBRULE($.expression); + const params = []; + let hash; + let blockParams; + + $.MANY(() => { + $.OR([ + { + GATE: () => $.isBlockParamsStart(), + ALT: () => { + blockParams = $.SUBRULE($.blockParamsRule); + }, + }, + { + GATE: () => $.isHashPairStart(), + ALT: () => { + hash = $.SUBRULE($.hash); + }, + }, + { + ALT: () => { + params.push($.SUBRULE2($.expression)); + }, + }, + ]); + }); + + return { expr, params, hash, blockParams }; + }); + + // ---- hashOnlyBody: hash ---- + $.RULE('hashOnlyBody', () => { + return { hash: $.SUBRULE($.hash) }; + }); + + // ---- blockParams: "as |" ID+ "|" ---- + $.RULE('blockParamsRule', () => { + $.CONSUME(OpenBlockParams); + const names = []; + $.AT_LEAST_ONE(() => { + const tok = $.CONSUME(ID); + names.push(tok.image); + }); + $.CONSUME(CloseBlockParams); + return names; + }); + + // ---- closePath: just helperName for {{/...}} ---- + $.RULE('closePath', () => { + return $.SUBRULE($.helperName); + }); + + this.performSelfAnalysis(); + } + + // Gate: is the next token sequence an ID = (hash pair start)? + isHashPairStart() { + const tok1 = this.LA(1); + if (tok1.tokenType !== ID && tok1.tokenType !== BracketID) return false; + const tok2 = this.LA(2); + return tok2.tokenType === Equals; + } + + // Gate: is the next token "as |" (block params)? + isBlockParamsStart() { + return this.LA(1).tokenType === OpenBlockParams; + } +} + +// Singleton parser instance (Chevrotain parsers are designed to be reused) +const exprParser = new HbsExpressionParser(); + +// ============================================================================ +// Location tracking helper +// ============================================================================ + +class LocTracker { + constructor(input) { + this.input = input; + this.pos = 0; + this.line = 1; + this.column = 0; + } + + clone() { + const t = new LocTracker(this.input); + t.pos = this.pos; + t.line = this.line; + t.column = this.column; + return t; + } + + loc() { + return { line: this.line, column: this.column }; + } + + advance(n) { + if (n === undefined) n = 1; + for (let i = 0; i < n; i++) { + if (this.input[this.pos] === '\n') { + this.line++; + this.column = 0; + } else { + this.column++; + } + this.pos++; + } + } + + ch(offset) { + return this.input[this.pos + (offset || 0)]; + } + + peek(offset) { + return this.input[this.pos + (offset || 0)] || ''; + } + + startsWith(str) { + return this.input.startsWith(str, this.pos); + } + + remaining() { + return this.input.length - this.pos; + } + + eof() { + return this.pos >= this.input.length; + } +} + +// ============================================================================ +// Main parser class +// ============================================================================ + +export function chevrotainParse(input, options) { + const parser = new ChevrotainHbsParser(input, options); + return parser.parseRoot(); +} + +class ChevrotainHbsParser { + constructor(input, options) { + this.input = input; + this.options = options || {}; + this.t = new LocTracker(input); + this.srcName = this.options.srcName; + this._inEscapedMustache = false; + + // Pre-compute line/column for every position in the input + // so we can quickly map Chevrotain token offsets to source locations. + this._posToLoc = new Array(input.length + 1); + let line = 1; + let col = 0; + for (let i = 0; i <= input.length; i++) { + this._posToLoc[i] = { line, column: col }; + if (i < input.length) { + if (input[i] === '\n') { + line++; + col = 0; + } else { + col++; + } + } + } + + this.syntax = { + square: 'string', + hash(hash, loc) { + return { + type: 'HashLiteral', + pairs: hash.pairs, + loc, + }; + }, + }; + } + + /** + * Get line/column for an absolute position in the original input. + */ + locAt(pos) { + if (pos >= this._posToLoc.length) { + return this._posToLoc[this._posToLoc.length - 1]; + } + return this._posToLoc[pos]; + } + + /** + * Build a loc info object from absolute positions. + */ + locInfoFromPos(startPos, endPos) { + const start = this.locAt(startPos); + const end = this.locAt(endPos); + return { + source: this.srcName, + start: { line: start.line, column: start.column }, + end: { line: end.line, column: end.column }, + }; + } + + // ------ Location helpers ------ + + locInfo(start, end) { + return { + source: this.srcName, + start: { line: start.line, column: start.column }, + end: end + ? { line: end.line, column: end.column } + : { line: start.line, column: start.column }, + }; + } + + error(msg, loc) { + const line = loc ? loc.start.line : this.t.line; + const col = loc ? loc.start.column : this.t.column; + + const lines = this.input.split('\n'); + const sourceLine = lines.slice(0, line).join(''); + const pointer = '-'.repeat(sourceLine.length - (lines[line - 1] || '').length + col) + '^'; + + const fullMsg = `Parse error on line ${line}:\n${sourceLine}\n${pointer}\n${msg}`; + const err = new Error(fullMsg); + err.hash = { + text: '', + line: line - 1, + loc: { + first_line: line, + last_line: line, + first_column: col, + last_column: col, + }, + }; + throw err; + } + + stripFlags(open, close) { + return { + open: open.charAt(2) === '~', + close: close.charAt(close.length - 3) === '~', + }; + } + + stripComment(comment) { + return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, ''); + } + + idFromBracket(token) { + if (/^\[.*\]$/.test(token)) { + return token.substring(1, token.length - 1); + } + return token; + } + + // ------ Top-level parsing ------ + + parseRoot() { + return this.parseProgram(); + } + + parseProgram() { + const statements = []; + while (!this.t.eof()) { + const stmt = this.parseStatement(); + if (stmt) statements.push(stmt); + } + return this.prepareProgram(statements); + } + + parseStatement() { + if (this._inEscapedMustache) { + return this.parseContent(); + } + if (!this.t.startsWith('{{') || this.isEscapedMustache()) { + return this.parseContent(); + } + return this.parseMustacheOrBlock(); + } + + // ------ Content parsing ------ + + parseContent() { + const start = this.t.loc(); + const startPos = this.t.pos; + let value = ''; + + if (this._inEscapedMustache) { + this._inEscapedMustache = false; + this.t.advance(2); + value += '{{'; + while (!this.t.eof()) { + if (this.t.startsWith('{{')) break; + if (this.t.peek() === '\\') { + let scanPos = 0; + while (this.t.peek(scanPos) === '\\') scanPos++; + if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') break; + } + value += this.t.peek(); + this.t.advance(); + } + const end = this.t.loc(); + const original = this.input.slice(startPos, this.t.pos); + return { + type: 'ContentStatement', + original, + value, + loc: this.locInfo(start, end), + }; + } + + while (!this.t.eof()) { + if (this.t.startsWith('{{')) break; + + if (this.t.peek() === '\\') { + let backslashCount = 0; + let scanPos = 0; + while (this.t.peek(scanPos) === '\\') { + backslashCount++; + scanPos++; + } + if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') { + if (backslashCount % 2 === 1) { + for (let i = 0; i < backslashCount - 1; i++) value += '\\'; + this.t.advance(backslashCount); + this._inEscapedMustache = true; + break; + } else { + for (let i = 0; i < backslashCount - 1; i++) value += '\\'; + this.t.advance(backslashCount); + break; + } + } + } + + value += this.t.peek(); + this.t.advance(); + } + + if (!value) return null; + + const end = this.t.loc(); + return { + type: 'ContentStatement', + original: value, + value, + loc: this.locInfo(start, end), + }; + } + + // ------ Mustache / block dispatch ------ + + parseMustacheOrBlock() { + const outerStart = this.t.loc(); + const openStr = this.consumeOpen(); + + if (openStr === null) return this.parseContent(); + + const { type, raw } = openStr; + + switch (type) { + case 'COMMENT': + return this.handleComment(raw, outerStart); + case 'OPEN': + return this.handleMustache(raw, outerStart); + case 'OPEN_UNESCAPED': + return this.handleUnescapedMustache(raw, outerStart); + case 'OPEN_BLOCK': + return this.handleBlock(raw, outerStart); + case 'OPEN_INVERSE': + case 'OPEN_INVERSE_CHAIN': + this.error('Unexpected inverse at top level'); + break; + case 'INVERSE': + this.error('Unexpected inverse at top level'); + break; + case 'OPEN_ENDBLOCK': + this.error('Unexpected end block at top level'); + break; + case 'OPEN_PARTIAL': + return this.handlePartial(raw, outerStart); + case 'OPEN_PARTIAL_BLOCK': + return this.handlePartialBlock(raw, outerStart); + default: + this.error(`Unexpected token type: ${type}`); + } + } + + // ------ Open token detection (manual scanning) ------ + + consumeOpen() { + if (!this.t.startsWith('{{')) return null; + + const startPos = this.t.pos; + this.t.advance(2); + if (this.t.peek() === '~') this.t.advance(); + + const nextCh = this.t.peek(); + + if (nextCh === '!') return this.consumeComment(startPos); + + if (nextCh === '{') { + this.t.advance(); + return { type: 'OPEN_UNESCAPED', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '>') { + this.t.advance(); + return { type: 'OPEN_PARTIAL', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '#' && this.t.peek(1) === '>') { + this.t.advance(2); + return { type: 'OPEN_PARTIAL_BLOCK', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '#') { + this.t.advance(); + if (this.t.peek() === '*') this.t.advance(); + return { type: 'OPEN_BLOCK', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '/') { + this.t.advance(); + return { type: 'OPEN_ENDBLOCK', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '^') { + const savedPos = this.t.pos; + const savedLine = this.t.line; + const savedCol = this.t.column; + this.t.advance(); + this.skipWS(); + + let closeStrip = this.t.peek() === '~' && this.t.peek(1) === '}'; + if ( + this.t.startsWith('}}') || + (closeStrip && this.t.peek(1) === '}' && this.t.peek(2) === '}') + ) { + if (closeStrip) this.t.advance(); + this.t.advance(2); + return { type: 'INVERSE', raw: this.input.slice(startPos, this.t.pos) }; + } + + this.t.pos = savedPos; + this.t.line = savedLine; + this.t.column = savedCol; + this.t.advance(); + return { type: 'OPEN_INVERSE', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (this.matchElse()) { + const savedPos = this.t.pos; + const savedLine = this.t.line; + const savedCol = this.t.column; + this.t.advance(4); + this.skipWS(); + + let closeStrip = false; + if (this.t.peek() === '~' && this.t.peek(1) === '}') closeStrip = true; + if (this.t.startsWith('}}') || (closeStrip && this.t.startsWith('~}}'))) { + if (closeStrip) this.t.advance(); + this.t.advance(2); + return { type: 'INVERSE', raw: this.input.slice(startPos, this.t.pos) }; + } + + this.t.pos = savedPos; + this.t.line = savedLine; + this.t.column = savedCol; + this.t.advance(4); + return { type: 'OPEN_INVERSE_CHAIN', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '&') { + this.t.advance(); + return { type: 'OPEN', raw: this.input.slice(startPos, this.t.pos) }; + } + + if (nextCh === '*') { + this.t.advance(); + return { type: 'OPEN', raw: this.input.slice(startPos, this.t.pos) }; + } + + return { type: 'OPEN', raw: this.input.slice(startPos, this.t.pos) }; + } + + matchElse() { + if ( + this.t.peek() === 'e' && + this.t.peek(1) === 'l' && + this.t.peek(2) === 's' && + this.t.peek(3) === 'e' + ) { + const after = this.t.peek(4); + return !after || isWhitespace(after) || after === '~' || after === '}'; + } + return false; + } + + consumeComment(startPos) { + this.t.advance(); // skip ! + if (this.t.peek() === '-' && this.t.peek(1) === '-') { + while (!this.t.eof()) { + if (this.t.startsWith('--')) { + const afterDash = this.t.peek(2); + if (afterDash === '}' && this.t.peek(3) === '}') { + this.t.advance(4); + break; + } + if (afterDash === '~' && this.t.peek(3) === '}' && this.t.peek(4) === '}') { + this.t.advance(5); + break; + } + } + this.t.advance(); + } + } else { + while (!this.t.eof()) { + if (this.t.startsWith('}}')) { + this.t.advance(2); + break; + } + this.t.advance(); + } + } + return { type: 'COMMENT', raw: this.input.slice(startPos, this.t.pos) }; + } + + handleComment(raw, start) { + const end = this.t.loc(); + return { + type: 'CommentStatement', + value: this.stripComment(raw), + strip: { + open: raw.charAt(2) === '~', + close: raw.charAt(raw.length - 3) === '~', + }, + loc: this.locInfo(start, end), + }; + } + + // ------ Expression extraction & Chevrotain parsing ------ + + /** + * Extract expression text from current position up to the appropriate + * close marker, respecting string literals and nested sub-expressions. + */ + extractExpressionText(closeKind) { + let i = this.t.pos; + let depth = 0; + let inString = false; + let stringChar = ''; + + while (i < this.input.length) { + const ch = this.input[i]; + + if (inString) { + if (ch === '\\') { + i += 2; + continue; + } + if (ch === stringChar) inString = false; + i++; + continue; + } + + if (ch === '"' || ch === "'") { + inString = true; + stringChar = ch; + i++; + continue; + } + + if (ch === '(') { + depth++; + i++; + continue; + } + if (ch === ')') { + if (depth > 0) { + depth--; + i++; + continue; + } + } + + if (depth === 0) { + if (closeKind === 'unescaped') { + if (ch === '}' && this.input[i + 1] === '}' && this.input[i + 2] === '}') break; + if ( + ch === '}' && + this.input[i + 1] === '~' && + this.input[i + 2] === '}' && + this.input[i + 3] === '}' + ) + break; + if ( + ch === '~' && + this.input[i + 1] === '}' && + this.input[i + 2] === '}' && + this.input[i + 3] === '}' + ) + break; + } else if (closeKind === 'rawblock') { + if ( + ch === '}' && + this.input[i + 1] === '}' && + this.input[i + 2] === '}' && + this.input[i + 3] === '}' + ) + break; + if ( + ch === '~' && + this.input[i + 1] === '}' && + this.input[i + 2] === '}' && + this.input[i + 3] === '}' && + this.input[i + 4] === '}' + ) + break; + } else { + // normal close: }} or ~}} + if (ch === '}' && this.input[i + 1] === '}') break; + if (ch === '~' && this.input[i + 1] === '}' && this.input[i + 2] === '}') break; + } + } + + i++; + } + + return this.input.substring(this.t.pos, i); + } + + /** + * Tokenize and parse expression text using Chevrotain. + */ + chevrotainParseExpr(exprText, ruleName, errorLoc) { + const lexResult = exprLexer.tokenize(exprText); + + if (lexResult.errors.length > 0) { + this.error(`Lexer error: ${lexResult.errors[0].message}`, errorLoc); + } + + // Check for INVALID tokens + for (const tok of lexResult.tokens) { + if (tok.tokenType === Invalid) { + // Advance the outer tracker to match the invalid token position + const advanceBy = tok.startOffset; + for (let i = 0; i < advanceBy; i++) this.t.advance(); + this.t.advance(); // past the invalid char + this.error( + `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` + ); + } + } + + exprParser.input = lexResult.tokens; + const result = exprParser[ruleName](); + + if (exprParser.errors.length > 0) { + const chevErr = exprParser.errors[0]; + const tokImage = chevErr.token ? `'${chevErr.token.image}'` : "'EOF'"; + let gotToken; + if (tokImage === "''") { + gotToken = "'EOF'"; + } else { + gotToken = tokImage; + } + this.error( + `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${gotToken}`, + errorLoc + ); + } + + return result; + } + + // ------ AST node construction from Chevrotain parse results ------ + + /** + * Get the location of a Chevrotain token mapped to original input coordinates. + * @param {Object} tok - A Chevrotain token with startOffset/endOffset + * @param {number} basePos - The position in the original input where the + * expression text starts (so tok.startOffset + basePos = absolute position) + */ + tokenLoc(tok, basePos) { + const startPos = basePos + tok.startOffset; + // endOffset is inclusive in Chevrotain, so +1 for exclusive end + const endPos = basePos + tok.endOffset + 1; + return this.locInfoFromPos(startPos, endPos); + } + + /** + * Get start/end positions for a range of tokens. + */ + tokenRangeLoc(firstTok, lastTok, basePos) { + const startPos = basePos + firstTok.startOffset; + const endPos = basePos + lastTok.endOffset + 1; + return this.locInfoFromPos(startPos, endPos); + } + + buildAst(result, basePos) { + if (!result) return null; + + switch (result.kind) { + case 'string': { + const tok = result.token; + const raw = tok.image; + const quote = raw[0]; + let value = raw.substring(1, raw.length - 1); + const escaped = new RegExp('\\\\' + quote.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'g'); + value = value.replace(escaped, quote); + return { + type: 'StringLiteral', + value, + original: value, + loc: this.tokenLoc(tok, basePos), + }; + } + + case 'number': { + const tok = result.token; + const value = Number(tok.image); + return { + type: 'NumberLiteral', + value, + original: value, + loc: this.tokenLoc(tok, basePos), + }; + } + + case 'boolean': { + const tok = result.token; + const value = tok.image === 'true'; + return { + type: 'BooleanLiteral', + value, + original: value, + loc: this.tokenLoc(tok, basePos), + }; + } + + case 'undefined': + return { + type: 'UndefinedLiteral', + original: undefined, + value: undefined, + loc: this.tokenLoc(result.token, basePos), + }; + + case 'null': + return { + type: 'NullLiteral', + original: null, + value: null, + loc: this.tokenLoc(result.token, basePos), + }; + + case 'path': + return this.buildPathExpression(result, basePos); + + case 'sub': { + const path = this.buildAst(result.path, basePos); + const params = result.params.map((p) => this.buildAst(p, basePos)); + let hash; + if (result.hash) hash = this.buildHash(result.hash, basePos); + return { + type: 'SubExpression', + path, + params, + hash, + loc: this.locInfoFromPos( + basePos + result.openTok.startOffset, + basePos + result.closeTok.endOffset + 1 + ), + }; + } + + default: + return result; + } + } + + buildPathExpression(result, basePos) { + const { segments, data } = result; + const parts = []; + let isThis = false; + let original = data ? '@' : ''; + + for (let i = 0; i < segments.length; i++) { + const seg = segments[i]; + const rawText = seg.token.image; + const separator = seg.separator; + let part, partOriginal; + + if (/^\[.*\]$/.test(rawText)) { + let content = rawText.substring(1, rawText.length - 1); + content = content.replace(/\\\\/g, '\\').replace(/\\\]/g, ']'); + part = content; + partOriginal = rawText; + } else { + part = rawText; + partOriginal = rawText; + } + + const partPrefix = separator === '.#' ? '#' : ''; + original += (separator || '') + partOriginal; + + if (partOriginal === part && (part === '..' || part === '.' || part === 'this')) { + if (parts.length > 0) { + const firstTok = segments[0].token; + const lastTok = segments[segments.length - 1].token; + this.error('Invalid path: ' + original, this.tokenRangeLoc(firstTok, lastTok, basePos)); + } else if (part === 'this') { + isThis = true; + } + } else { + parts.push(`${partPrefix}${part}`); + } + } + + const head = parts.shift(); + const tail = parts; + + // Compute location from first token to last token + const firstTok = data ? result.dataTok : segments[0].token; + const lastTok = segments[segments.length - 1].token; + + return { + type: 'PathExpression', + this: isThis, + data, + head, + tail, + parts: head !== undefined ? [head, ...tail] : tail, + original, + loc: this.tokenRangeLoc(firstTok, lastTok, basePos), + }; + } + + buildHash(pairs, basePos) { + const astPairs = pairs.map((p) => { + const keyRaw = p.key.image; + const key = /^\[.*\]$/.test(keyRaw) ? keyRaw.substring(1, keyRaw.length - 1) : keyRaw; + const value = this.buildAst(p.value, basePos); + // HashPair loc: from key token to value's end + const valueLoc = value.loc; + return { + type: 'HashPair', + key, + value, + loc: { + source: this.srcName, + start: this.locAt(basePos + p.key.startOffset), + end: valueLoc.end, + }, + }; + }); + + const firstPair = astPairs[0]; + const lastPair = astPairs[astPairs.length - 1]; + + return { + type: 'Hash', + pairs: astPairs, + loc: { + source: this.srcName, + start: firstPair.loc.start, + end: lastPair.loc.end, + }, + }; + } + + // ------ Mustache handlers ------ + + handleMustache(openRaw, outerStart) { + const basePos = this.t.pos; + const exprText = this.extractExpressionText('normal'); + + if (!exprText.trim()) { + const got = "'CLOSE'"; + this.error( + `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${got}` + ); + } + + // Check for hash-only mustache + const trimmed = exprText.trim(); + if (this.isHashOnlyText(trimmed)) { + const parsed = this.chevrotainParseExpr( + exprText, + 'hashOnlyBody', + this.locInfo(outerStart, this.t.loc()) + ); + this.t.advance(exprText.length); + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + const loc = this.locInfo(outerStart, end); + const hash = this.buildHash(parsed.hash, basePos); + const hashLiteralNode = this.syntax.hash(hash, loc); + + return this.prepareMustache( + hashLiteralNode, + [], + undefined, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + const parsed = this.chevrotainParseExpr( + exprText, + 'mustacheBody', + this.locInfo(outerStart, this.t.loc()) + ); + this.t.advance(exprText.length); + + const expr = this.buildAst(parsed.expr, basePos); + const params = parsed.params.map((p) => this.buildAst(p, basePos)); + let hash; + if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); + + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + + return this.prepareMustache( + expr, + params, + hash, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + handleUnescapedMustache(openRaw, outerStart) { + const basePos = this.t.pos; + const exprText = this.extractExpressionText('unescaped'); + + const parsed = this.chevrotainParseExpr( + exprText, + 'mustacheBody', + this.locInfo(outerStart, this.t.loc()) + ); + this.t.advance(exprText.length); + + const expr = this.buildAst(parsed.expr, basePos); + const params = parsed.params.map((p) => this.buildAst(p, basePos)); + let hash; + if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); + + const closeRaw = this.consumeCloseUnescaped(); + const end = this.t.loc(); + + return this.prepareMustache( + expr, + params, + hash, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + prepareMustache(path, params, hash, open, strip, startLoc, endLoc) { + if (/\*/.test(open)) { + this.error( + 'Handlebars decorators are not supported in Glimmer', + this.locInfo(startLoc, endLoc) + ); + } + + let escapeFlag = open.charAt(3) || open.charAt(2); + let escaped = escapeFlag !== '{' && escapeFlag !== '&'; + + return { + type: 'MustacheStatement', + path, + params, + hash, + escaped, + strip, + loc: this.locInfo(startLoc, endLoc), + }; + } + + handlePartial(openRaw, outerStart) { + const basePos = this.t.pos; + const exprText = this.extractExpressionText('normal'); + + const parsed = this.chevrotainParseExpr( + exprText, + 'mustacheBody', + this.locInfo(outerStart, this.t.loc()) + ); + this.t.advance(exprText.length); + + const expr = this.buildAst(parsed.expr, basePos); + const params = parsed.params.map((p) => this.buildAst(p, basePos)); + let hash; + if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); + + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + + return { + type: 'PartialStatement', + name: expr, + params, + hash, + indent: '', + strip: this.stripFlags(openRaw, closeRaw), + loc: this.locInfo(outerStart, end), + }; + } + + handlePartialBlock(openRaw, outerStart) { + this.error( + 'Handlebars partial blocks are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); + } + + // ------ Block handling ------ + + handleBlock(openRaw, outerStart) { + if (/\*/.test(openRaw)) { + this.error( + 'Handlebars decorator blocks are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); + } + + const basePos = this.t.pos; + const exprText = this.extractExpressionText('normal'); + + const parsed = this.chevrotainParseExpr( + exprText, + 'mustacheBody', + this.locInfo(outerStart, this.t.loc()) + ); + this.t.advance(exprText.length); + + const helperExpr = this.buildAst(parsed.expr, basePos); + const params = parsed.params.map((p) => this.buildAst(p, basePos)); + let hash; + if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); + + const closeRaw = this.consumeClose(); + const openBlock = { + open: openRaw, + path: helperExpr, + params, + hash, + blockParams: parsed.blockParams, + strip: this.stripFlags(openRaw, closeRaw), + }; + + const program = this.parseProgramBody(); + + let inverseAndProgram; + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + if (peeked === 'INVERSE') { + inverseAndProgram = this.parseInverseAndProgram(); + } else if (peeked === 'OPEN_INVERSE_CHAIN') { + inverseAndProgram = this.parseInverseChain(); + } + } + + const closeBlock = this.parseCloseBlock(); + const end = this.t.loc(); + + return this.prepareBlock( + openBlock, + program, + inverseAndProgram, + closeBlock, + false, + outerStart, + end + ); + } + + prepareBlock(openBlock, program, inverseAndProgram, close, inverted, startLoc, endLoc) { + if (close && close.path) this.validateClose(openBlock, close); + + program.blockParams = openBlock.blockParams; + + let inverse, inverseStrip; + + if (inverseAndProgram) { + if (inverseAndProgram.chain) { + inverseAndProgram.program.body[0].closeStrip = close.strip; + } + inverseStrip = inverseAndProgram.strip; + inverse = inverseAndProgram.program; + } + + if (inverted) { + inverted = inverse; + inverse = program; + program = inverted; + } + + return { + type: 'BlockStatement', + path: openBlock.path, + params: openBlock.params, + hash: openBlock.hash, + program, + inverse, + openStrip: openBlock.strip, + inverseStrip, + closeStrip: close && close.strip, + loc: this.locInfo(startLoc, endLoc), + }; + } + + validateClose(openBlock, close) { + let closeName = close.path ? close.path.original : close; + if (openBlock.path.original !== closeName) { + this.error(openBlock.path.original + " doesn't match " + closeName, openBlock.path.loc); + } + } + + parseProgramBody() { + const statements = []; + while (!this.t.eof()) { + if (this.t.startsWith('{{') && !this.isEscapedMustache()) { + const peeked = this.peekMustacheType(); + if ( + peeked === 'OPEN_ENDBLOCK' || + peeked === 'INVERSE' || + peeked === 'OPEN_INVERSE_CHAIN' || + peeked === 'OPEN_INVERSE' + ) { + break; + } + const stmt = this.parseMustacheOrBlock(); + if (stmt) statements.push(stmt); + } else { + const content = this.parseContent(); + if (content) statements.push(content); + } + } + return this.prepareProgram(statements); + } + + parseInverseAndProgram() { + const openResult = this.consumeOpen(); + const raw = openResult.raw; + const strip = { + open: raw.charAt(2) === '~', + close: raw.charAt(raw.length - 3) === '~', + }; + const program = this.parseProgramBody(); + return { strip, program }; + } + + parseInverseChain() { + const outerStart = this.t.loc(); + const openResult = this.consumeOpen(); + const openRaw = openResult.raw; + + if (openResult.type === 'OPEN_INVERSE_CHAIN' || openResult.type === 'OPEN_INVERSE') { + const basePos = this.t.pos; + const exprText = this.extractExpressionText('normal'); + + const parsed = this.chevrotainParseExpr( + exprText, + 'mustacheBody', + this.locInfo(outerStart, this.t.loc()) + ); + this.t.advance(exprText.length); + + const helperExpr = this.buildAst(parsed.expr, basePos); + const params = parsed.params.map((p) => this.buildAst(p, basePos)); + let hash; + if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); + + const closeRaw = this.consumeClose(); + const openInverseChain = { + path: helperExpr, + params, + hash, + blockParams: parsed.blockParams, + strip: this.stripFlags(openRaw, closeRaw), + }; + + const program = this.parseProgramBody(); + + let inverseChain; + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + if (peeked === 'OPEN_INVERSE_CHAIN') { + inverseChain = this.parseInverseChain(); + } else if (peeked === 'INVERSE') { + inverseChain = this.parseInverseAndProgram(); + } + } + + const end = this.t.loc(); + const inverse = this.prepareBlock( + openInverseChain, + program, + inverseChain, + inverseChain, + false, + outerStart, + end + ); + const wrappedProgram = this.prepareProgram([inverse], program.loc); + wrappedProgram.chained = true; + + return { strip: openInverseChain.strip, program: wrappedProgram, chain: true }; + } + + this.error('Unexpected inverse chain type'); + } + + parseCloseBlock() { + if (!this.t.startsWith('{{')) return null; + + const openResult = this.consumeOpen(); + if (openResult.type !== 'OPEN_ENDBLOCK') { + this.error('Expected close block, got ' + openResult.type); + } + + const basePos = this.t.pos; + const exprText = this.extractExpressionText('normal'); + + const parsed = this.chevrotainParseExpr( + exprText, + 'closePath', + this.locInfoFromPos(basePos, this.t.pos) + ); + this.t.advance(exprText.length); + + const path = this.buildAst(parsed, basePos); + const closeRaw = this.consumeClose(); + + return { + path, + strip: this.stripFlags(openResult.raw, closeRaw), + }; + } + + peekMustacheType() { + if (!this.t.startsWith('{{')) return null; + const saved = this.t.clone(); + const openResult = this.consumeOpen(); + const type = openResult ? openResult.type : null; + this.t = saved; + return type; + } + + prepareProgram(statements, loc) { + if (!loc && statements.length) { + const firstLoc = statements[0].loc; + const lastLoc = statements[statements.length - 1].loc; + if (firstLoc && lastLoc) { + loc = { + source: firstLoc.source, + start: { line: firstLoc.start.line, column: firstLoc.start.column }, + end: { line: lastLoc.end.line, column: lastLoc.end.column }, + }; + } + } + return { + type: 'Program', + body: statements, + strip: {}, + loc, + }; + } + + // ------ Close token consumption ------ + + consumeClose() { + const startPos = this.t.pos; + if (this.t.peek() === '~') this.t.advance(); + if (this.t.peek() === '}' && this.t.peek(1) === '}') { + this.t.advance(2); + return this.input.slice(startPos, this.t.pos); + } + this.t.advance(); + this.error( + `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` + ); + } + + consumeCloseUnescaped() { + const startPos = this.t.pos; + if (this.t.peek() === '}') { + this.t.advance(); + if (this.t.peek() === '~') this.t.advance(); + if (this.t.peek() === '}' && this.t.peek(1) === '}') { + this.t.advance(2); + return this.input.slice(startPos, this.t.pos); + } + } + if (this.input[startPos] === '~') { + this.t.advance(); + if (this.t.peek() === '}' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { + this.t.advance(3); + return this.input.slice(startPos, this.t.pos); + } + } + this.error('Expected closing }}}'); + } + + // ------ Utility methods ------ + + skipWS() { + while (!this.t.eof() && isWhitespace(this.t.peek())) { + this.t.advance(); + } + } + + isEscapedMustache() { + if (this.t.peek() !== '\\') return false; + let count = 0; + while (this.t.peek(count) === '\\') count++; + return count % 2 === 1 && this.t.peek(count) === '{' && this.t.peek(count + 1) === '{'; + } + + /** + * Check if expression text is hash-only (starts with ID= ...). + */ + isHashOnlyText(text) { + let i = 0; + if (text[i] === '[') { + while (i < text.length && text[i] !== ']') i++; + if (text[i] === ']') i++; + } else { + if (!isIDChar(text[i])) return false; + while (i < text.length && isIDChar(text[i])) i++; + } + while (i < text.length && /\s/.test(text[i])) i++; + return text[i] === '='; + } +} diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parse.js b/packages/@glimmer/syntax/lib/hbs-parser/parse.js index 9eab75b50d2..8aa80f73b17 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parse.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parse.js @@ -1,4 +1,4 @@ -import { rdParse } from './rd-parser.js'; +import { chevrotainParse } from './chevrotain-parser.js'; import WhitespaceControl from './whitespace-control.js'; export function parseWithoutProcessing(input, options) { @@ -7,7 +7,7 @@ export function parseWithoutProcessing(input, options) { return input; } - return rdParse(input, options); + return chevrotainParse(input, options); } export function parse(input, options) { diff --git a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js deleted file mode 100644 index 744d744b56a..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/rd-parser.js +++ /dev/null @@ -1,1769 +0,0 @@ -/** - * Single-pass recursive-descent parser for Handlebars templates. - * - * Replaces the Jison-generated parser.js. Produces the same HBS AST structure - * (Program, MustacheStatement, BlockStatement, ContentStatement, CommentStatement, - * PathExpression, SubExpression, Hash, HashPair, and literals) that the old parser - * produced, so the rest of the pipeline (WhitespaceControl, HandlebarsNodeVisitors) - * continues to work unchanged. - */ - -// ============================================================================ -// Lexer helpers -// ============================================================================ - -// ID = [^\s!"#%-,\.\/;->@\[-\^`\{-~]+ -// The inverse of control characters. We check char-by-char. -function isIDChar(ch) { - if (!ch) return false; - const c = ch.charCodeAt(0); - // Whitespace - if (c <= 0x20) return false; // space, tabs, newlines, etc. - // Ranges of disallowed chars (from the lexer regex): - // !"# => 0x21-0x23 - if (c >= 0x21 && c <= 0x23) return false; - // $ => 0x24 is ALLOWED - // %-, => 0x25-0x2c - if (c >= 0x25 && c <= 0x2c) return false; - // - => 0x2d is ALLOWED - // . => 0x2e - if (c === 0x2e) return false; - // / => 0x2f - if (c === 0x2f) return false; - // 0-9 => 0x30-0x39 are ALLOWED (digits) - // : => 0x3a is ALLOWED - // ; => 0x3b - if (c === 0x3b) return false; - // <=> => 0x3c-0x3e - if (c >= 0x3c && c <= 0x3e) return false; - // ? => 0x3f is ALLOWED - // @ => 0x40 - if (c === 0x40) return false; - // A-Z => 0x41-0x5a are ALLOWED - // [\]^ => 0x5b-0x5e - if (c >= 0x5b && c <= 0x5e) return false; - // _ => 0x5f is ALLOWED - // ` => 0x60 - if (c === 0x60) return false; - // a-z => 0x61-0x7a are ALLOWED - // {|}~ => 0x7b-0x7e - if (c >= 0x7b && c <= 0x7e) return false; - - return true; -} - -function isWhitespace(ch) { - return /^\s$/u.test(ch); -} - -// LITERAL_LOOKAHEAD = [~}\s)\]] -function isLiteralLookahead(ch) { - return !ch || ch === '~' || ch === '}' || isWhitespace(ch) || ch === ')' || ch === ']'; -} - -// LOOKAHEAD = [=~}\s\/.)\]|] -function isLookahead(ch) { - return ( - !ch || - ch === '=' || - ch === '~' || - ch === '}' || - isWhitespace(ch) || - ch === '/' || - ch === '.' || - ch === ')' || - ch === ']' || - ch === '|' - ); -} - -// ============================================================================ -// Location tracking -// ============================================================================ - -class LocTracker { - constructor(input) { - this.input = input; - this.pos = 0; - this.line = 1; - this.column = 0; - } - - clone() { - const t = new LocTracker(this.input); - t.pos = this.pos; - t.line = this.line; - t.column = this.column; - return t; - } - - loc() { - return { line: this.line, column: this.column }; - } - - advance(n) { - if (n === undefined) n = 1; - for (let i = 0; i < n; i++) { - if (this.input[this.pos] === '\n') { - this.line++; - this.column = 0; - } else { - this.column++; - } - this.pos++; - } - } - - ch(offset) { - return this.input[this.pos + (offset || 0)]; - } - - peek(offset) { - return this.input[this.pos + (offset || 0)] || ''; - } - - startsWith(str) { - return this.input.startsWith(str, this.pos); - } - - remaining() { - return this.input.length - this.pos; - } - - eof() { - return this.pos >= this.input.length; - } -} - -// ============================================================================ -// Parser -// ============================================================================ - -export function rdParse(input, options) { - const parser = new RDParser(input, options); - return parser.parseRoot(); -} - -class RDParser { - constructor(input, options) { - this.input = input; - this.options = options || {}; - this.t = new LocTracker(input); - this.srcName = this.options.srcName; - this._inEscapedMustache = false; - - // The syntax configuration, matching what parse.js sets up - this.syntax = { - square: 'string', // bracket-escaped identifiers - hash: function (hash, loc) { - return { - type: 'HashLiteral', - pairs: hash.pairs, - loc, - }; - }, - }; - } - - locInfo(start, end) { - const loc = { - source: this.srcName, - start: { line: start.line, column: start.column }, - end: end - ? { line: end.line, column: end.column } - : { line: start.line, column: start.column }, - }; - return loc; - } - - error(msg, loc) { - // Format errors to match the Jison parser's parseError output, which - // prettier's glimmer plugin and snapshot tests depend on. - const line = loc ? loc.start.line : this.t.line; - const col = loc ? loc.start.column : this.t.column; - - // Build the Jison-style "Parse error on line N:" display. - // Jison showed all input lines up to and including the error line, - // joined together (no newlines), with a pointer to the column. - const lines = this.input.split('\n'); - const sourceLine = lines.slice(0, line).join(''); - const pointer = '-'.repeat(sourceLine.length - (lines[line - 1] || '').length + col) + '^'; - - const fullMsg = `Parse error on line ${line}:\n${sourceLine}\n${pointer}\n${msg}`; - const err = new Error(fullMsg); - err.hash = { - text: '', - line: line - 1, - loc: { - first_line: line, - last_line: line, - first_column: col, - last_column: col, - }, - }; - throw err; - } - - stripFlags(open, close) { - return { - open: open.charAt(2) === '~', - close: close.charAt(close.length - 3) === '~', - }; - } - - stripComment(comment) { - return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, ''); - } - - id(token) { - if (/^\[.*\]$/.test(token)) { - return token.substring(1, token.length - 1); - } - return token; - } - - // ============================================================================ - // Top-level parsing - // ============================================================================ - - parseRoot() { - const program = this.parseProgram(); - return program; - } - - parseProgram() { - const statements = []; - - while (!this.t.eof()) { - const stmt = this.parseStatement(); - if (stmt) { - statements.push(stmt); - } - } - - return this.prepareProgram(statements); - } - - parseStatements() { - const statements = []; - - while (!this.t.eof()) { - const stmt = this.parseStatement(); - if (stmt !== null) { - statements.push(stmt); - } - } - - return statements; - } - - parseStatement() { - // If we're resuming after an escaped mustache boundary, the next - // content is the escaped {{ text (separate ContentStatement). - if (this._inEscapedMustache) { - return this.parseContent(); - } - - // Content: everything up to {{ or EOF - if (!this.t.startsWith('{{') || this.isEscapedMustache()) { - return this.parseContent(); - } - - // We're at {{ - return this.parseMustacheOrBlock(); - } - - parseContent() { - const start = this.t.loc(); - const startPos = this.t.pos; - let value = ''; - - // If we're resuming after an escaped mustache boundary, consume - // the {{ and everything until the next {{ or EOF as content. - // This matches the Jison lexer's 'emu' state behavior. - if (this._inEscapedMustache) { - this._inEscapedMustache = false; - // Consume the {{ that was escaped - this.t.advance(2); - value += '{{'; - // Continue scanning until next {{ or \{{ or \\{{ or EOF. - // Matches the Jison emu state: [^\x00]{2,}?/("{{"|"\\{{"|"\\\\{{"|<>) - while (!this.t.eof()) { - if (this.t.startsWith('{{')) break; - // Any backslash(es) followed by {{ also ends this content - if (this.t.peek() === '\\') { - let scanPos = 0; - while (this.t.peek(scanPos) === '\\') scanPos++; - if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') break; - } - value += this.t.peek(); - this.t.advance(); - } - const end = this.t.loc(); - const original = this.input.slice(startPos, this.t.pos); - return { - type: 'ContentStatement', - original, - value, - loc: this.locInfo(start, end), - }; - } - - while (!this.t.eof()) { - // Stop at a real mustache open (but handle backslash escaping) - if (this.t.startsWith('{{')) { - break; - } - - // When we see a backslash, check if there's a {{ coming after - // consecutive backslashes. The Jison lexer rules: - // \{{ → escaped mustache (emit {{ as content) - // \\{{ → literal \ then real mustache - // \\\{{ → literal \ then escaped mustache (emit \{{ as content) - if (this.t.peek() === '\\') { - let backslashCount = 0; - let scanPos = 0; - while (this.t.peek(scanPos) === '\\') { - backslashCount++; - scanPos++; - } - - if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') { - // Backslashes followed by {{ — match Jison's strip(0,1) behavior: - // just remove the last backslash, keep all others verbatim. - // Jison did NOT collapse \\ pairs into single \. - if (backslashCount % 2 === 1) { - // Odd: last \ escapes the {{. - // Emit all backslashes except the last one. - for (let i = 0; i < backslashCount - 1; i++) { - value += '\\'; - } - this.t.advance(backslashCount); - // End current content here (matching Jison's state boundary). - this._inEscapedMustache = true; - break; - } else { - // Even: the last \\ is a literal backslash pair, {{ is real. - // Emit all backslashes except the last one (strip(0,1)). - for (let i = 0; i < backslashCount - 1; i++) { - value += '\\'; - } - this.t.advance(backslashCount); - // {{ is a real mustache - break; - } - } - } - - value += this.t.peek(); - this.t.advance(); - } - - if (!value) return null; - - const end = this.t.loc(); - // In the Jison parser, `original` and `value` start identical. - // Whitespace-control later modifies `value` while `original` is - // preserved for standalone detection. - - return { - type: 'ContentStatement', - original: value, - value, - loc: this.locInfo(start, end), - }; - } - - /** - * Parse a mustache ({{...}}) or block ({{#...}}...{{/...}}). - * We're positioned at the opening {{. - */ - parseMustacheOrBlock() { - const outerStart = this.t.loc(); - const openStr = this.consumeOpen(); // returns the opening token string - - if (openStr === null) { - // Not a valid mustache; treat as content - return this.parseContent(); - } - - const { type, raw } = openStr; - - switch (type) { - case 'COMMENT': - return this.handleComment(raw, outerStart); - case 'OPEN': - return this.handleMustache(raw, outerStart); - case 'OPEN_UNESCAPED': - return this.handleUnescapedMustache(raw, outerStart); - case 'OPEN_BLOCK': - return this.handleBlock(raw, outerStart); - case 'OPEN_INVERSE': - case 'OPEN_INVERSE_CHAIN': - // These should only appear within block parsing, not at top level - this.error('Unexpected inverse at top level'); - break; - case 'INVERSE': - // Standalone inverse {{ ^ }} or {{ else }} - this.error('Unexpected inverse at top level'); - break; - case 'OPEN_ENDBLOCK': - this.error('Unexpected end block at top level'); - break; - case 'OPEN_PARTIAL': - return this.handlePartial(raw, outerStart); - case 'OPEN_PARTIAL_BLOCK': - return this.handlePartialBlock(raw, outerStart); - default: - this.error(`Unexpected token type: ${type}`); - } - } - - /** - * Consume the opening {{ and determine what kind it is. - * Returns { type, raw } where raw is the full opening token string. - */ - consumeOpen() { - if (!this.t.startsWith('{{')) return null; - - const startPos = this.t.pos; - this.t.advance(2); // skip {{ - - // Check for strip flag (~) - if (this.t.peek() === '~') { - this.t.advance(); - } - - const nextCh = this.t.peek(); - - // {{! or {{!-- comment - if (nextCh === '!') { - return this.consumeComment(startPos); - } - - // {{{ unescaped (or {{~{ with strip) - if (nextCh === '{') { - // The {{ was already consumed. If next is {, this is {{{ (or {{~{). - this.t.advance(); // skip third { - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_UNESCAPED', raw }; - } - - // {{> partial - if (nextCh === '>') { - this.t.advance(); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_PARTIAL', raw }; - } - - // {{#> partial block - if (nextCh === '#' && this.t.peek(1) === '>') { - this.t.advance(2); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_PARTIAL_BLOCK', raw }; - } - - // {{# block (with optional *) - if (nextCh === '#') { - this.t.advance(); // skip # - if (this.t.peek() === '*') { - this.t.advance(); - } - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_BLOCK', raw }; - } - - // {{/ end block - if (nextCh === '/') { - this.t.advance(); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_ENDBLOCK', raw }; - } - - // {{^ inverse or {{^ standalone inverse - if (nextCh === '^') { - // Check if this is a standalone inverse: {{^}} or {{~ ^~}} - const savedPos = this.t.pos; - const savedLine = this.t.line; - const savedCol = this.t.column; - this.t.advance(); // skip ^ - - // Skip whitespace - this.skipWS(); - - // Check for immediate close - let closeStrip = this.t.peek() === '~' && this.t.peek(1) === '}'; - - if ( - this.t.startsWith('}}') || - (closeStrip && this.t.peek(1) === '}' && this.t.peek(2) === '}') - ) { - // Standalone inverse: {{^}} — consume the close - if (closeStrip) this.t.advance(); // skip ~ - this.t.advance(2); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'INVERSE', raw }; - } - - // It's an open inverse: {{^ helperName ...}} - // Restore to right after ^ - this.t.pos = savedPos + 1; - this.t.line = savedLine; - this.t.column = savedCol + 1; - // Recalculate line/column properly - this.t.pos = savedPos; - this.t.line = savedLine; - this.t.column = savedCol; - this.t.advance(); // skip ^ - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_INVERSE', raw }; - } - - // Check for {{else}} or {{else if ...}} - // Need to check for 'else' keyword followed by whitespace or }} - if (this.matchElse()) { - const savedPos = this.t.pos; - const savedLine = this.t.line; - const savedCol = this.t.column; - - this.t.advance(4); // skip 'else' - - // Skip whitespace - this.skipWS(); - - // Check if it's just {{else}} (standalone inverse) - let closeStrip = false; - if (this.t.peek() === '~' && this.t.peek(1) === '}') { - closeStrip = true; - } - if (this.t.startsWith('}}') || (closeStrip && this.t.startsWith('~}}'))) { - if (closeStrip) this.t.advance(); - this.t.advance(2); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'INVERSE', raw }; - } - - // It's {{else ...}} — an inverse chain - // Restore to after 'else' - this.t.pos = savedPos; - this.t.line = savedLine; - this.t.column = savedCol; - this.t.advance(4); // skip 'else' - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN_INVERSE_CHAIN', raw }; - } - - // {{& unescaped - if (nextCh === '&') { - this.t.advance(); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN', raw }; - } - - // {{* decorator - if (nextCh === '*') { - this.t.advance(); - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN', raw }; - } - - // Regular {{ - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'OPEN', raw }; - } - - matchElse() { - // Check if we're looking at 'else' followed by whitespace or ~ or }} - if ( - this.t.peek() === 'e' && - this.t.peek(1) === 'l' && - this.t.peek(2) === 's' && - this.t.peek(3) === 'e' - ) { - const after = this.t.peek(4); - return !after || isWhitespace(after) || after === '~' || after === '}'; - } - return false; - } - - consumeComment(startPos) { - this.t.advance(); // skip ! - - // Check for long comment {{!--...--}} - if (this.t.peek() === '-' && this.t.peek(1) === '-') { - // Long comment: scan for --}} - // Don't advance past --, we need the full text for stripComment - // Actually, we need to scan for --~?}} - while (!this.t.eof()) { - if (this.t.startsWith('--')) { - // Check for --}} or --~}} - const afterDash = this.t.peek(2); - if (afterDash === '}' && this.t.peek(3) === '}') { - this.t.advance(4); // skip --}} - break; - } - if (afterDash === '~' && this.t.peek(3) === '}' && this.t.peek(4) === '}') { - this.t.advance(5); // skip --~}} - break; - } - } - this.t.advance(); - } - } else { - // Short comment: scan to }} - while (!this.t.eof()) { - if (this.t.startsWith('}}')) { - this.t.advance(2); - break; - } - this.t.advance(); - } - } - - const raw = this.input.slice(startPos, this.t.pos); - return { type: 'COMMENT', raw }; - } - - handleComment(raw, start) { - const end = this.t.loc(); - const value = this.stripComment(raw); - const strip = { - open: raw.charAt(2) === '~', - close: raw.charAt(raw.length - 3) === '~', - }; - - return { - type: 'CommentStatement', - value, - strip, - loc: this.locInfo(start, end), - }; - } - - handleMustache(openRaw, outerStart) { - this.skipWS(); - - // Check for hash-only mustache: {{key=value}} - if (this.isHashStart()) { - const hash = this.parseHash(); - this.skipWS(); - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - const loc = this.locInfo(outerStart, end); - - // Hash-only mustache: the path is derived from the hash - const hashLiteralNode = this.syntax.hash(hash, loc); - - return this.prepareMustache( - hashLiteralNode, - [], - undefined, - openRaw, - this.stripFlags(openRaw, closeRaw), - outerStart, - end - ); - } - - // Check for empty mustache {{}} or {{~}} before trying to parse expr - if (this.isClose(false)) { - const got = this.t.peek() === '~' ? "'CLOSE'" : "'CLOSE'"; - this.error( - `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${got}` - ); - } - - // Parse the main expression - const expr = this.parseExpr(); - this.skipWS(); - - // Parse additional params and hash - const params = []; - let hash = undefined; - - while (!this.isClose(false) && !this.t.eof()) { - if (this.isHashStart()) { - hash = this.parseHash(); - this.skipWS(); - break; - } - // Detect characters that can't start an expression or close — these - // would have been INVALID tokens in the Jison lexer. - this.checkForInvalidToken(); - params.push(this.parseExpr()); - this.skipWS(); - } - - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - - return this.prepareMustache( - expr, - params, - hash, - openRaw, - this.stripFlags(openRaw, closeRaw), - outerStart, - end - ); - } - - handleUnescapedMustache(openRaw, outerStart) { - this.skipWS(); - - const expr = this.parseExpr(); - this.skipWS(); - - const params = []; - let hash = undefined; - - while (!this.isCloseUnescaped() && !this.t.eof()) { - if (this.isHashStart()) { - hash = this.parseHash(); - this.skipWS(); - break; - } - params.push(this.parseExpr()); - this.skipWS(); - } - - const closeRaw = this.consumeCloseUnescaped(); - const end = this.t.loc(); - - return this.prepareMustache( - expr, - params, - hash, - openRaw, - this.stripFlags(openRaw, closeRaw), - outerStart, - end - ); - } - - prepareMustache(path, params, hash, open, strip, startLoc, endLoc) { - if (/\*/.test(open)) { - this.error( - 'Handlebars decorators are not supported in Glimmer', - this.locInfo(startLoc, endLoc) - ); - } - - let escapeFlag = open.charAt(3) || open.charAt(2); - let escaped = escapeFlag !== '{' && escapeFlag !== '&'; - - return { - type: 'MustacheStatement', - path, - params, - hash, - escaped, - strip, - loc: this.locInfo(startLoc, endLoc), - }; - } - - handlePartial(openRaw, outerStart) { - this.skipWS(); - - const expr = this.parseExpr(); - this.skipWS(); - - const params = []; - let hash = undefined; - - while (!this.isClose(false) && !this.t.eof()) { - if (this.isHashStart()) { - hash = this.parseHash(); - this.skipWS(); - break; - } - params.push(this.parseExpr()); - this.skipWS(); - } - - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - - return { - type: 'PartialStatement', - name: expr, - params, - hash, - indent: '', - strip: this.stripFlags(openRaw, closeRaw), - loc: this.locInfo(outerStart, end), - }; - } - - handlePartialBlock(openRaw, outerStart) { - this.error( - 'Handlebars partial blocks are not supported in Glimmer', - this.locInfo(outerStart, this.t.loc()) - ); - } - - handleBlock(openRaw, outerStart) { - // We're right after the open token ({{#, {{~#, {{#*, etc.) - // Check for decorator blocks - if (/\*/.test(openRaw)) { - this.error( - 'Handlebars decorator blocks are not supported in Glimmer', - this.locInfo(outerStart, this.t.loc()) - ); - } - - this.skipWS(); - - // Parse the helper name - const helperExpr = this.parseExpr(); - this.skipWS(); - - // Parse params and hash - const params = []; - let hash = undefined; - let blockParams = undefined; - - while (!this.isBlockParamsStart() && !this.isClose(false) && !this.t.eof()) { - if (this.isHashStart()) { - hash = this.parseHash(); - this.skipWS(); - break; - } - params.push(this.parseExpr()); - this.skipWS(); - } - - // Parse block params: as |foo bar| - if (this.isBlockParamsStart()) { - blockParams = this.parseBlockParams(); - this.skipWS(); - } - - const closeRaw = this.consumeClose(); - const openBlock = { - open: openRaw, - path: helperExpr, - params, - hash, - blockParams, - strip: this.stripFlags(openRaw, closeRaw), - }; - - // Parse the program (body of the block) - const program = this.parseProgramBody(); - - // Check for inverse chain - let inverseAndProgram = undefined; - - if (this.t.startsWith('{{')) { - const peeked = this.peekMustacheType(); - - if (peeked === 'INVERSE') { - inverseAndProgram = this.parseInverseAndProgram(); - } else if (peeked === 'OPEN_INVERSE_CHAIN') { - inverseAndProgram = this.parseInverseChain(); - } - } - - // Parse close block - const closeBlock = this.parseCloseBlock(); - const end = this.t.loc(); - - return this.prepareBlock( - openBlock, - program, - inverseAndProgram, - closeBlock, - false, - outerStart, - end - ); - } - - prepareBlock(openBlock, program, inverseAndProgram, close, inverted, startLoc, endLoc) { - if (close && close.path) { - this.validateClose(openBlock, close); - } - - program.blockParams = openBlock.blockParams; - - let inverse, inverseStrip; - - if (inverseAndProgram) { - if (inverseAndProgram.chain) { - inverseAndProgram.program.body[0].closeStrip = close.strip; - } - - inverseStrip = inverseAndProgram.strip; - inverse = inverseAndProgram.program; - } - - if (inverted) { - inverted = inverse; - inverse = program; - program = inverted; - } - - return { - type: 'BlockStatement', - path: openBlock.path, - params: openBlock.params, - hash: openBlock.hash, - program, - inverse, - openStrip: openBlock.strip, - inverseStrip, - closeStrip: close && close.strip, - loc: this.locInfo(startLoc, endLoc), - }; - } - - validateClose(openBlock, close) { - let closeName = close.path ? close.path.original : close; - if (openBlock.path.original !== closeName) { - this.error(openBlock.path.original + " doesn't match " + closeName, openBlock.path.loc); - } - } - - /** - * Parse the body of a block/program until we hit {{/...}}, {{else}}, {{^}}, - * {{else if ...}}, or EOF. - */ - parseProgramBody() { - const statements = []; - - while (!this.t.eof()) { - // Check what's next - if (this.t.startsWith('{{') && !this.isEscapedMustache()) { - const peeked = this.peekMustacheType(); - - if ( - peeked === 'OPEN_ENDBLOCK' || - peeked === 'INVERSE' || - peeked === 'OPEN_INVERSE_CHAIN' || - peeked === 'OPEN_INVERSE' - ) { - break; - } - - const stmt = this.parseMustacheOrBlock(); - if (stmt) statements.push(stmt); - } else { - const content = this.parseContent(); - if (content) statements.push(content); - } - } - - return this.prepareProgram(statements); - } - - parseInverseAndProgram() { - // We're at {{ and we know it's an INVERSE ({{else}} or {{^}}) - const openResult = this.consumeOpen(); - const raw = openResult.raw; - const strip = { - open: raw.charAt(2) === '~', - close: raw.charAt(raw.length - 3) === '~', - }; - - const program = this.parseProgramBody(); - - return { strip, program }; - } - - parseInverseChain() { - // {{else if ...}} — an inverse chain - // Could be OPEN_INVERSE_CHAIN or OPEN_INVERSE depending on peekMustacheType - const outerStart = this.t.loc(); - const openResult = this.consumeOpen(); - const openRaw = openResult.raw; - - if (openResult.type === 'OPEN_INVERSE_CHAIN' || openResult.type === 'OPEN_INVERSE') { - this.skipWS(); - - // Parse the helper - const helperExpr = this.parseExpr(); - this.skipWS(); - - const params = []; - let hash = undefined; - let blockParams = undefined; - - while (!this.isBlockParamsStart() && !this.isClose(false) && !this.t.eof()) { - if (this.isHashStart()) { - hash = this.parseHash(); - this.skipWS(); - break; - } - params.push(this.parseExpr()); - this.skipWS(); - } - - if (this.isBlockParamsStart()) { - blockParams = this.parseBlockParams(); - this.skipWS(); - } - - const closeRaw = this.consumeClose(); - const openInverseChain = { - path: helperExpr, - params, - hash, - blockParams, - strip: this.stripFlags(openRaw, closeRaw), - }; - - // Parse the chained program body - const program = this.parseProgramBody(); - - // Check for more inverse chains - let inverseChain = undefined; - if (this.t.startsWith('{{')) { - const peeked = this.peekMustacheType(); - if (peeked === 'OPEN_INVERSE_CHAIN') { - inverseChain = this.parseInverseChain(); - } else if (peeked === 'INVERSE') { - inverseChain = this.parseInverseAndProgram(); - } - } - - const end = this.t.loc(); - - // Build nested block - const inverse = this.prepareBlock( - openInverseChain, - program, - inverseChain, - inverseChain, // reuse for close strip - false, - outerStart, - end - ); - const wrappedProgram = this.prepareProgram([inverse], program.loc); - wrappedProgram.chained = true; - - return { strip: openInverseChain.strip, program: wrappedProgram, chain: true }; - } - - // Shouldn't get here - this.error('Unexpected inverse chain type'); - } - - parseCloseBlock() { - // Expect {{/helperName}} - if (!this.t.startsWith('{{')) { - return null; - } - - const openResult = this.consumeOpen(); - - if (openResult.type !== 'OPEN_ENDBLOCK') { - this.error('Expected close block, got ' + openResult.type); - } - - this.skipWS(); - const path = this.parseHelperName(); - this.skipWS(); - - const closeRaw = this.consumeClose(); - - return { - path, - strip: this.stripFlags(openResult.raw, closeRaw), - }; - } - - /** - * Peek at what type of mustache is coming without consuming. - */ - peekMustacheType() { - if (!this.t.startsWith('{{')) return null; - - // Save state - const saved = this.t.clone(); - - const openResult = this.consumeOpen(); - const type = openResult ? openResult.type : null; - - // Restore state - this.t = saved; - - return type; - } - - prepareProgram(statements, loc) { - if (!loc && statements.length) { - const firstLoc = statements[0].loc; - const lastLoc = statements[statements.length - 1].loc; - - if (firstLoc && lastLoc) { - loc = { - source: firstLoc.source, - start: { - line: firstLoc.start.line, - column: firstLoc.start.column, - }, - end: { - line: lastLoc.end.line, - column: lastLoc.end.column, - }, - }; - } - } - - return { - type: 'Program', - body: statements, - strip: {}, - loc: loc, - }; - } - - // ============================================================================ - // Expression parsing - // ============================================================================ - - parseExpr() { - this.skipWS(); - - // SubExpression: (...) - if (this.t.peek() === '(') { - return this.parseSubExpression(); - } - - // helperName: path, dataName, STRING, NUMBER, BOOLEAN, UNDEFINED, NULL - return this.parseHelperName(); - } - - parseHelperName() { - this.skipWS(); - - const ch = this.t.peek(); - - // String literal - if (ch === '"' || ch === "'") { - return this.parseStringLiteral(); - } - - // Number literal - if (this.isNumberStart()) { - return this.parseNumberLiteral(); - } - - // Boolean, undefined, null keywords - const kw = this.matchKeyword(); - if (kw) { - return kw; - } - - // Data name: @path - if (ch === '@') { - return this.parseDataName(); - } - - // Path - return this.parsePath(false, false); - } - - parseSubExpression() { - const start = this.t.loc(); - this.t.advance(); // skip ( - this.skipWS(); - - // Check for hash-only: (key=value) - if (this.isHashStart()) { - const hash = this.parseHash(); - this.skipWS(); - if (this.t.peek() !== ')') { - this.error('Expected )'); - } - this.t.advance(); - const end = this.t.loc(); - const loc = this.locInfo(start, end); - return this.syntax.hash(hash, loc); - } - - const expr = this.parseExpr(); - this.skipWS(); - - const params = []; - let hash = undefined; - - while (this.t.peek() !== ')' && !this.t.eof()) { - if (this.isHashStart()) { - hash = this.parseHash(); - this.skipWS(); - break; - } - params.push(this.parseExpr()); - this.skipWS(); - } - - if (this.t.peek() !== ')') { - this.error('Expected closing )'); - } - this.t.advance(); // skip ) - - const end = this.t.loc(); - - return { - type: 'SubExpression', - path: expr, - params, - hash, - loc: this.locInfo(start, end), - }; - } - - parseHash() { - const pairs = []; - const start = this.t.loc(); - - while (this.isHashStart()) { - pairs.push(this.parseHashPair()); - this.skipWS(); - } - - return { - type: 'Hash', - pairs, - loc: this.locInfo(start, this.t.loc()), - }; - } - - parseHashPair() { - const start = this.t.loc(); - - // Read ID - const key = this.readID(); - this.skipWS(); - // Skip = - if (this.t.peek() !== '=') { - this.error('Expected = in hash pair'); - } - this.t.advance(); // skip = - this.skipWS(); - - const value = this.parseExpr(); - const end = this.t.loc(); - - return { - type: 'HashPair', - key: this.id(key), - value, - loc: this.locInfo(start, end), - }; - } - - parsePath(data, sexprHead) { - const start = this.t.loc(); - - const segments = this.parsePathSegments(); - - if (segments.length === 0) { - const got = this.t.peek(); - let gotToken; - if (!got) gotToken = "'EOF'"; - else if (got === '}' && this.t.peek(1) === '}') gotToken = "'CLOSE'"; - else if (got === '~' && this.t.peek(1) === '}' && this.t.peek(2) === '}') - gotToken = "'CLOSE'"; - else if (got === ')') gotToken = "'CLOSE_SEXPR'"; - else if (got === '=') gotToken = "'EQUALS'"; - else gotToken = "'INVALID'"; - this.error( - `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${gotToken}`, - this.locInfo(start, this.t.loc()) - ); - } - - return this.preparePath(data, sexprHead, segments, start); - } - - preparePath(data, sexprHead, parts, startLoc) { - const endLoc = this.t.loc(); - const loc = this.locInfo(startLoc, endLoc); - - let original; - - if (data) { - original = '@'; - } else if (sexprHead) { - original = sexprHead.original + '.'; - } else { - original = ''; - } - - let tail = []; - let isThis = false; - - for (let i = 0; i < parts.length; i++) { - let part = parts[i].part; - let isLiteral = parts[i].original !== part; - let separator = parts[i].separator; - - let partPrefix = separator === '.#' ? '#' : ''; - - original += (separator || '') + parts[i].original; - - if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { - if (tail.length > 0) { - this.error('Invalid path: ' + original, loc); - } else if (part === 'this') { - isThis = true; - } - } else { - tail.push(`${partPrefix}${part}`); - } - } - - let head = sexprHead || tail.shift(); - - return { - type: 'PathExpression', - this: isThis, - data, - head, - tail, - parts: head ? [head, ...tail] : tail, - original, - loc, - }; - } - - parsePathSegments() { - const segments = []; - - // First segment — uses readID which rejects digit-starting tokens - // (those are NumberLiterals at the top level, e.g., @0 is invalid) - const first = this.readPathSegment(false); - if (!first) return segments; - segments.push({ part: this.id(first), original: first }); - - // Additional segments separated by . or / - while (this.t.peek() === '.' || this.t.peek() === '/') { - let separator; - if (this.t.peek() === '.' && this.t.peek(1) === '#') { - // Private separator .# - separator = '.#'; - this.t.advance(2); - } else if (this.t.peek() === '.') { - // In the original Handlebars lexer, "."/{LOOKAHEAD} is an ID, not SEP. - // So "." followed by a lookahead char (space, }, ), ], etc.) should NOT - // be consumed as a separator. Only "." followed by a non-lookahead char - // (i.e., the start of the next path segment) is a separator. - const afterDot = this.t.peek(1) || ''; - if (isLookahead(afterDot) && afterDot !== '.' && afterDot !== '/') { - // The dot is NOT a separator; stop path parsing here - break; - } - separator = '.'; - this.t.advance(); - } else { - separator = '/'; - this.t.advance(); - } - - const seg = this.readPathSegment(true); - if (!seg) { - // Dangling separator — shouldn't normally happen now - segments.push({ part: '.', original: '.', separator }); - break; - } - segments.push({ part: this.id(seg), original: seg, separator }); - } - - return segments; - } - - readPathSegment(allowDigitStart) { - // Could be a bracket-escaped segment [...] - if (this.t.peek() === '[') { - return this.readBracketSegment(); - } - - // Could be .. (double dot) - if (this.t.peek() === '.' && this.t.peek(1) === '.') { - this.t.advance(2); - return '..'; - } - - // Could be . followed by a lookahead char (single dot as ID) - if (this.t.peek() === '.' && isLookahead(this.t.peek(1))) { - this.t.advance(); - return '.'; - } - - if (allowDigitStart) { - // After a separator, digit-starting tokens are valid path segments - // (e.g., array.2.[@#].[1]) - const first = this.t.peek(); - if (!first || !isIDChar(first)) return null; - - let id = ''; - while (!this.t.eof() && isIDChar(this.t.peek())) { - id += this.t.peek(); - this.t.advance(); - } - return id || null; - } - - // First segment: use readID which rejects digit-starting tokens - return this.readID(); - } - - readBracketSegment() { - if (this.t.peek() !== '[') return null; - this.t.advance(); // skip [ - - let content = ''; - while (!this.t.eof() && this.t.peek() !== ']') { - if (this.t.peek() === '\\' && this.t.peek(1) === ']') { - content += ']'; - this.t.advance(2); - } else if (this.t.peek() === '\\' && this.t.peek(1) === '\\') { - content += '\\'; - this.t.advance(2); - } else { - content += this.t.peek(); - this.t.advance(); - } - } - - if (this.t.peek() === ']') { - this.t.advance(); - } - - return '[' + content + ']'; - } - - readID() { - // In the original Handlebars lexer, NUMBER and keyword tokens have higher - // priority than ID. If the text starts with a digit, it's a NUMBER not an ID. - // Similarly, @ is a DATA token, = is EQUALS, ! is INVALID — none are ID starts. - const first = this.t.peek(); - if (!first || !isIDChar(first)) return null; - - // If it starts with a digit, the Jison lexer would match NUMBER, not ID - if (first >= '0' && first <= '9') return null; - - let id = ''; - while (!this.t.eof() && isIDChar(this.t.peek())) { - id += this.t.peek(); - this.t.advance(); - } - return id || null; - } - - parseDataName() { - const start = this.t.loc(); - this.t.advance(); // skip @ - - const segments = this.parsePathSegments(); - - if (segments.length === 0) { - // The original Jison parser would fail with "Expecting 'ID', got ..." - // because after the DATA (@) token, it expects an ID token. - const got = this.t.peek(); - this.error( - `Parse error on line ${this.t.line}:\nExpecting 'ID', got '${got || 'EOF'}'`, - this.locInfo(start, this.t.loc()) - ); - } - - return this.preparePath(true, false, segments, start); - } - - parseStringLiteral() { - const start = this.t.loc(); - const quote = this.t.peek(); - this.t.advance(); // skip opening quote - - let value = ''; - while (!this.t.eof() && this.t.peek() !== quote) { - if (this.t.peek() === '\\' && this.t.peek(1) === quote) { - value += quote; - this.t.advance(2); - } else { - value += this.t.peek(); - this.t.advance(); - } - } - - if (this.t.peek() === quote) { - this.t.advance(); // skip closing quote - } - - const end = this.t.loc(); - - return { - type: 'StringLiteral', - value, - original: value, - loc: this.locInfo(start, end), - }; - } - - isNumberStart() { - const ch = this.t.peek(); - if (ch >= '0' && ch <= '9') return true; - if (ch === '-') { - const next = this.t.peek(1); - return next >= '0' && next <= '9'; - } - return false; - } - - parseNumberLiteral() { - const start = this.t.loc(); - let numStr = ''; - - if (this.t.peek() === '-') { - numStr += '-'; - this.t.advance(); - } - - while (!this.t.eof() && this.t.peek() >= '0' && this.t.peek() <= '9') { - numStr += this.t.peek(); - this.t.advance(); - } - - if (this.t.peek() === '.' && this.t.peek(1) >= '0' && this.t.peek(1) <= '9') { - numStr += '.'; - this.t.advance(); - while (!this.t.eof() && this.t.peek() >= '0' && this.t.peek() <= '9') { - numStr += this.t.peek(); - this.t.advance(); - } - } - - const end = this.t.loc(); - const value = Number(numStr); - - return { - type: 'NumberLiteral', - value, - original: value, - loc: this.locInfo(start, end), - }; - } - - matchKeyword() { - const keywords = [ - { word: 'true', type: 'BooleanLiteral', value: true }, - { word: 'false', type: 'BooleanLiteral', value: false }, - { word: 'undefined', type: 'UndefinedLiteral', value: undefined }, - { word: 'null', type: 'NullLiteral', value: null }, - ]; - - for (const kw of keywords) { - if (this.t.startsWith(kw.word)) { - const afterKw = this.t.peek(kw.word.length); - if (isLiteralLookahead(afterKw) || afterKw === undefined) { - const start = this.t.loc(); - this.t.advance(kw.word.length); - const end = this.t.loc(); - - return { - type: kw.type, - value: kw.value, - original: kw.value, - loc: this.locInfo(start, end), - }; - } - } - } - - return null; - } - - parseBlockParams() { - // 'as' whitespace+ '|' ID+ '|' - // Skip 'as' - this.t.advance(2); - this.skipWS(); - - if (this.t.peek() !== '|') { - this.error('Expected | after as'); - } - this.t.advance(); // skip | - - const names = []; - - while (this.t.peek() !== '|' && !this.t.eof()) { - this.skipWS(); - if (this.t.peek() === '|') break; - const id = this.readID(); - if (id) names.push(id); - } - - if (this.t.peek() === '|') { - this.t.advance(); // skip closing | - } - - return names.map((n) => this.id(n)); - } - - // ============================================================================ - // Helpers - // ============================================================================ - - skipWS() { - while (!this.t.eof() && isWhitespace(this.t.peek())) { - this.t.advance(); - } - } - - isClose(unescaped) { - if (unescaped) { - return this.isCloseUnescaped(); - } - // Check for ~}} or }} - if (this.t.peek() === '~' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { - return true; - } - return this.t.peek() === '}' && this.t.peek(1) === '}'; - } - - isCloseUnescaped() { - // }~}} or }}} - if (this.t.peek() === '}') { - if (this.t.peek(1) === '~' && this.t.peek(2) === '}' && this.t.peek(3) === '}') { - return true; - } - return this.t.peek(1) === '}' && this.t.peek(2) === '}'; - } - // ~}}} - if ( - this.t.peek() === '~' && - this.t.peek(1) === '}' && - this.t.peek(2) === '}' && - this.t.peek(3) === '}' - ) { - return true; - } - return false; - } - - checkForInvalidToken() { - const ch = this.t.peek(); - if ( - ch && - !isIDChar(ch) && - !isWhitespace(ch) && - ch !== '"' && - ch !== "'" && - ch !== '(' && - ch !== '@' && - ch !== '-' && - ch !== '.' && - ch !== '[' && - !(ch >= '0' && ch <= '9') - ) { - // Capture the location of the invalid character, then advance - const invalidLoc = this.locInfo(this.t.loc(), this.t.loc()); - this.t.advance(); - this.error( - `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'`, - invalidLoc - ); - } - } - - consumeClose() { - const startPos = this.t.pos; - if (this.t.peek() === '~') { - this.t.advance(); // skip ~ - } - if (this.t.peek() === '}' && this.t.peek(1) === '}') { - this.t.advance(2); - return this.input.slice(startPos, this.t.pos); - } - // The character at this position is not a valid close }}. - // Advance past it so the error column matches Jison's behavior - // (Jison reported the position AFTER consuming the invalid token). - this.t.advance(); - this.error( - `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` - ); - } - - consumeCloseUnescaped() { - const startPos = this.t.pos; - // Could be }~}} or }}} - if (this.t.peek() === '}') { - this.t.advance(); // skip first } - if (this.t.peek() === '~') { - this.t.advance(); // skip ~ - } - if (this.t.peek() === '}' && this.t.peek(1) === '}') { - this.t.advance(2); - return this.input.slice(startPos, this.t.pos); - } - } - // ~}}} - if (this.input[startPos] === '~') { - this.t.advance(); - if (this.t.peek() === '}' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { - this.t.advance(3); - return this.input.slice(startPos, this.t.pos); - } - } - this.error('Expected closing }}}'); - } - - isHashStart() { - // Check if next token is ID=expr - const saved = this.t.clone(); - this.skipWS(); - - const ch = this.t.peek(); - if (!isIDChar(ch) && ch !== '[') { - this.t = saved; - return false; - } - - // Read the ID - if (ch === '[') { - this.readBracketSegment(); - } else { - while (!this.t.eof() && isIDChar(this.t.peek())) { - this.t.advance(); - } - } - - // Skip whitespace between ID and = - while (!this.t.eof() && isWhitespace(this.t.peek())) { - this.t.advance(); - } - const isHash = this.t.peek() === '='; - this.t = saved; - return isHash; - } - - isEscapedMustache() { - // Check if the current position has an odd number of backslashes - // followed by {{ (meaning the mustache is escaped). - if (this.t.peek() !== '\\') return false; - let count = 0; - while (this.t.peek(count) === '\\') count++; - return count % 2 === 1 && this.t.peek(count) === '{' && this.t.peek(count + 1) === '{'; - } - - isBlockParamsStart() { - // Check for 'as' followed by whitespace and | - if (this.t.peek() === 'a' && this.t.peek(1) === 's') { - const after = this.t.peek(2); - if (isWhitespace(after)) { - // Peek further for | - const saved = this.t.clone(); - this.t.advance(2); - this.skipWS(); - const result = this.t.peek() === '|'; - this.t = saved; - return result; - } - } - return false; - } -} diff --git a/packages/@glimmer/syntax/package.json b/packages/@glimmer/syntax/package.json index 36db32df47e..1de5ebb4379 100644 --- a/packages/@glimmer/syntax/package.json +++ b/packages/@glimmer/syntax/package.json @@ -35,6 +35,7 @@ "@glimmer/interfaces": "workspace:*", "@glimmer/util": "workspace:*", "@glimmer/wire-format": "workspace:*", + "chevrotain": "^12.0.0", "simple-html-tokenizer": "^0.5.11" }, "devDependencies": { diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml index bbb4ee58202..f96bc66b0b3 100644 --- a/pnpm-lock.yaml +++ b/pnpm-lock.yaml @@ -155,7 +155,7 @@ importers: version: 2.1.0 ember-cli-dependency-checker: specifier: ^3.3.1 - version: 3.3.3(ember-cli@6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)(ejs@3.1.10)(handlebars@4.7.9)(underscore@1.13.8)) + version: 3.3.3(ember-cli@6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)) ember-cli-yuidoc: specifier: ^0.9.1 version: 0.9.1 @@ -2150,6 +2150,9 @@ importers: '@glimmer/wire-format': specifier: workspace:* version: link:../wire-format + chevrotain: + specifier: ^12.0.0 + version: 12.0.0 simple-html-tokenizer: specifier: ^0.5.11 version: 0.5.11 @@ -2794,7 +2797,7 @@ importers: version: 3.0.0 ember-cli-dependency-checker: specifier: ^3.3.3 - version: 3.3.3(ember-cli@6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)(ejs@3.1.10)(handlebars@4.7.9)(underscore@1.13.8)) + version: 3.3.3(ember-cli@6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)) ember-cli-deprecation-workflow: specifier: ^3.4.0 version: 3.4.0(ember-source@) @@ -3844,6 +3847,21 @@ packages: '@cacheable/utils@2.4.1': resolution: {integrity: sha512-eiFgzCbIneyMlLOmNG4g9xzF7Hv3Mga4LjxjcSC/ues6VYq2+gUbQI8JqNuw/ZM8tJIeIaBGpswAsqV2V7ApgA==} + '@chevrotain/cst-dts-gen@12.0.0': + resolution: {integrity: sha512-fSL4KXjTl7cDgf0B5Rip9Q05BOrYvkJV/RrBTE/bKDN096E4hN/ySpcBK5B24T76dlQ2i32Zc3PAE27jFnFrKg==} + + '@chevrotain/gast@12.0.0': + resolution: {integrity: sha512-1ne/m3XsIT8aEdrvT33so0GUC+wkctpUPK6zU9IlOyJLUbR0rg4G7ZiApiJbggpgPir9ERy3FRjT6T7lpgetnQ==} + + '@chevrotain/regexp-to-ast@12.0.0': + resolution: {integrity: sha512-p+EW9MaJwgaHguhoqwOtx/FwuGr+DnNn857sXWOi/mClXIkPGl3rn7hGNWvo31HA3vyeQxjqe+H36yZJwYU8cA==} + + '@chevrotain/types@12.0.0': + resolution: {integrity: sha512-S+04vjFQKeuYw0/eW3U52LkAHQsB1ASxsPGsLPUyQgrZ2iNNibQrsidruDzjEX2JYfespXMG0eZmXlhA6z7nWA==} + + '@chevrotain/utils@12.0.0': + resolution: {integrity: sha512-lB59uJoaGIfOOL9knQqQRfhl9g7x8/wqFkp13zTdkRu1huG9kg6IJs1O8hqj9rs6h7orGxHJUKb+mX3rPbWGhA==} + '@cnakazawa/watch@1.0.4': resolution: {integrity: sha512-v9kIhKwjeZThiWrLmj0y17CWoyddASLj9O2yvbZkbvw/N3rWOYy9zkV66ursAoVr0mV15bL8g0c4QZUE6cdDoQ==} engines: {node: '>=0.1.95'} @@ -6639,6 +6657,10 @@ packages: check-error@1.0.3: resolution: {integrity: sha512-iKEoDYaRmd1mxM90a2OEfWhjsjPpYPuQ+lMYsoxB126+t8fw7ySEO48nmDg5COTjxDI65/Y2OWpeEHk3ZOe8zg==} + chevrotain@12.0.0: + resolution: {integrity: sha512-csJvb+6kEiQaqo1woTdSAuOWdN0WTLIydkKrBnS+V5gZz0oqBrp4kQ35519QgK6TpBThiG3V1vNSHlIkv4AglQ==} + engines: {node: '>=22.0.0'} + chokidar@4.0.3: resolution: {integrity: sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==} engines: {node: '>= 14.16.0'} @@ -13059,6 +13081,21 @@ snapshots: hashery: 1.5.1 keyv: 5.6.0 + '@chevrotain/cst-dts-gen@12.0.0': + dependencies: + '@chevrotain/gast': 12.0.0 + '@chevrotain/types': 12.0.0 + + '@chevrotain/gast@12.0.0': + dependencies: + '@chevrotain/types': 12.0.0 + + '@chevrotain/regexp-to-ast@12.0.0': {} + + '@chevrotain/types@12.0.0': {} + + '@chevrotain/utils@12.0.0': {} + '@cnakazawa/watch@1.0.4': dependencies: exec-sh: 0.3.6 @@ -16637,6 +16674,14 @@ snapshots: dependencies: get-func-name: 2.0.2 + chevrotain@12.0.0: + dependencies: + '@chevrotain/cst-dts-gen': 12.0.0 + '@chevrotain/gast': 12.0.0 + '@chevrotain/regexp-to-ast': 12.0.0 + '@chevrotain/types': 12.0.0 + '@chevrotain/utils': 12.0.0 + chokidar@4.0.3: dependencies: readdirp: 4.1.2 @@ -17354,7 +17399,7 @@ snapshots: transitivePeerDependencies: - supports-color - ember-cli-dependency-checker@3.3.3(ember-cli@6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)(ejs@3.1.10)(handlebars@4.7.9)(underscore@1.13.8)): + ember-cli-dependency-checker@3.3.3(ember-cli@6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)): dependencies: chalk: 2.4.2 ember-cli: 6.11.2(@babel/core@7.29.0)(@types/node@22.19.15)(ejs@3.1.10)(handlebars@4.7.9)(underscore@1.13.8) diff --git a/rollup.config.mjs b/rollup.config.mjs index 3db627d39ab..57835844f9c 100644 --- a/rollup.config.mjs +++ b/rollup.config.mjs @@ -280,6 +280,8 @@ export function hiddenDependencies() { findFromProject('@glimmer/syntax', 'simple-html-tokenizer'), 'module' ).path, + chevrotain: entrypoint(findFromProject('@glimmer/syntax', 'chevrotain'), 'module').path, + ...chevrotainSubpackages(), ...walkGlimmerDeps(['@glimmer/compiler']), 'decorator-transforms/runtime': resolve( findFromProject('decorator-transforms').root, @@ -319,6 +321,30 @@ function walkGlimmerDeps(packageNames) { return entrypoints; } +function chevrotainSubpackages() { + const chevrotainPkg = findFromProject('@glimmer/syntax', 'chevrotain'); + const subPkgNames = [ + '@chevrotain/cst-dts-gen', + '@chevrotain/gast', + '@chevrotain/regexp-to-ast', + '@chevrotain/types', + '@chevrotain/utils', + ]; + const result = {}; + for (const name of subPkgNames) { + try { + const subPkg = packageCache.resolve(name, chevrotainPkg); + const ep = entrypoint(subPkg, 'module'); + if (ep) { + result[name] = ep.path; + } + } catch { + // sub-package not found, skip + } + } + return result; +} + function findFromProject(...names) { let current; @@ -535,6 +561,9 @@ const allowedCycles = [ // external and not causing problems 'node_modules/rsvp/lib/rsvp', + // chevrotain has internal circular deps between its modules + 'node_modules/chevrotain', + // TODO: these would be good to fix once they're in this repo 'packages/@glimmer/debug', 'packages/@glimmer/runtime', From 00f9627370063ab8b2fc7d6fe070478f8cb7d7a9 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Fri, 10 Apr 2026 13:17:12 -0400 Subject: [PATCH 23/54] Replace Chevrotain with Peggy-based parser MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Chevrotain was problematic as a bundled dependency (deep dependency tree, Node 21+ requirement for v12). Replace with Peggy, which generates a standalone parser from a .peggy grammar file with zero runtime dependencies. Architecture: - hbs.peggy (322 lines): PEG grammar for Handlebars expressions (paths, literals, sub-expressions, hash pairs, block params) - parser.js (2170 lines): generated from hbs.peggy, committed to repo. Regenerate with: pnpm build:hbs-parser - hbs-scanner.js (1096 lines): outer template scanner for content, mustache boundaries, backslash escaping, blocks, comments. Delegates expression parsing to the Peggy parser. Peggy is a dev-only dependency — the generated parser.js is self-contained with no runtime imports. Co-Authored-By: Claude Opus 4.6 (1M context) --- .prettierignore | 2 + eslint.config.mjs | 1 + package.json | 2 + .../lib/hbs-parser/chevrotain-parser.js | 1694 ------------- .../syntax/lib/hbs-parser/hbs-scanner.js | 1096 +++++++++ .../@glimmer/syntax/lib/hbs-parser/hbs.peggy | 322 +++ .../@glimmer/syntax/lib/hbs-parser/parse.js | 4 +- .../@glimmer/syntax/lib/hbs-parser/parser.js | 2170 +++++++++++++++++ packages/@glimmer/syntax/package.json | 1 - pnpm-lock.yaml | 73 +- rollup.config.mjs | 29 - 11 files changed, 3623 insertions(+), 1771 deletions(-) delete mode 100644 packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy create mode 100644 packages/@glimmer/syntax/lib/hbs-parser/parser.js diff --git a/.prettierignore b/.prettierignore index ba24e3a5116..de0a2dad810 100644 --- a/.prettierignore +++ b/.prettierignore @@ -11,4 +11,6 @@ CHANGELOG.md package.json pnpm-lock.yaml internal-docs/**/*.md +packages/@glimmer/syntax/lib/hbs-parser/parser.js +*.peggy tracerbench-testing/ diff --git a/eslint.config.mjs b/eslint.config.mjs index abd534fa12b..ac12606e3b6 100644 --- a/eslint.config.mjs +++ b/eslint.config.mjs @@ -28,6 +28,7 @@ export default [ '**/type-tests/', 'internal-docs/guides/**', 'packages/@glimmer-workspace/**', + 'packages/@glimmer/syntax/lib/hbs-parser/parser.js', 'tracerbench-testing/', ], }, diff --git a/package.json b/package.json index fc556ae09e1..c268ce9c0e4 100644 --- a/package.json +++ b/package.json @@ -37,6 +37,7 @@ "scripts": { "actions-up": "pnpm dlx actions-up", "bench": "node ./bin/benchmark.mjs", + "build:hbs-parser": "peggy --format es packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy -o packages/@glimmer/syntax/lib/hbs-parser/parser.js", "build:js": "rollup --config", "build:types": "node types/publish.mjs", "build": "npm-run-all build:*", @@ -123,6 +124,7 @@ "kill-port-process": "^3.2.1", "mocha": "^11.0.0", "npm-run-all2": "^8.0.0", + "peggy": "^5.1.0", "prettier": "^3.5.3", "qunit": "^2.19.4", "recast": "^0.22.0", diff --git a/packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js b/packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js deleted file mode 100644 index 4435c5fc703..00000000000 --- a/packages/@glimmer/syntax/lib/hbs-parser/chevrotain-parser.js +++ /dev/null @@ -1,1694 +0,0 @@ -/** - * Chevrotain-based parser for Handlebars templates. - * - * Replaces the recursive-descent rd-parser.js. Produces the same HBS AST - * structure (Program, MustacheStatement, BlockStatement, ContentStatement, - * CommentStatement, PathExpression, SubExpression, Hash, HashPair, and - * literals) that the old parser produced, so the rest of the pipeline - * (WhitespaceControl, HandlebarsNodeVisitors) continues to work unchanged. - * - * Architecture: - * - The OUTER layer (content scanning, backslash escaping, block nesting, - * open/close detection) uses manual character-by-character scanning, - * because Handlebars' content mode has context-dependent tokenization - * that Chevrotain's lexer cannot handle in a single pass. - * - The INNER layer (expression parsing inside {{ ... }}) uses Chevrotain's - * EmbeddedActionsParser with a standard Lexer for tokenization. - */ - -import { createToken, Lexer, EmbeddedActionsParser } from 'chevrotain'; - -// ============================================================================ -// Helper functions (shared between outer and inner layers) -// ============================================================================ - -function isIDChar(ch) { - if (!ch) return false; - const c = ch.charCodeAt(0); - if (c <= 0x20) return false; - if (c >= 0x21 && c <= 0x23) return false; - if (c >= 0x25 && c <= 0x2c) return false; - if (c === 0x2e) return false; - if (c === 0x2f) return false; - if (c === 0x3b) return false; - if (c >= 0x3c && c <= 0x3e) return false; - if (c === 0x40) return false; - if (c >= 0x5b && c <= 0x5e) return false; - if (c === 0x60) return false; - if (c >= 0x7b && c <= 0x7e) return false; - return true; -} - -function isWhitespace(ch) { - return /^\s$/u.test(ch); -} - -// ============================================================================ -// Chevrotain Token Definitions (for expression mode inside mustaches) -// ============================================================================ - -const WS = createToken({ - name: 'WS', - pattern: /\s+/, - group: Lexer.SKIPPED, - line_breaks: true, -}); - -const OpenSexpr = createToken({ name: 'OpenSexpr', pattern: /\(/ }); -const CloseSexpr = createToken({ name: 'CloseSexpr', pattern: /\)/ }); -const Equals = createToken({ name: 'Equals', pattern: /=/ }); - -// "as |" for block params — must come before ID -const OpenBlockParams = createToken({ - name: 'OpenBlockParams', - pattern: /as\s+\|/, - line_breaks: true, -}); - -const CloseBlockParams = createToken({ name: 'CloseBlockParams', pattern: /\|/ }); -const Data = createToken({ name: 'Data', pattern: /@/ }); -const PrivateSep = createToken({ name: 'PrivateSep', pattern: /\.#/ }); -const Sep = createToken({ name: 'Sep', pattern: /[./]/ }); - -// Helper: check if character is a literal lookahead (terminates keyword/number) -function isLitLookahead(ch) { - return !ch || ch === '~' || ch === '}' || /\s/.test(ch) || ch === ')' || ch === ']'; -} - -// Keywords (must come before ID) — use custom patterns to avoid $ anchor -const BooleanLiteral = createToken({ - name: 'BooleanLiteral', - line_breaks: false, - pattern: (text, startOffset) => { - if (text.startsWith('true', startOffset) && isLitLookahead(text[startOffset + 4])) { - return ['true']; - } - if (text.startsWith('false', startOffset) && isLitLookahead(text[startOffset + 5])) { - return ['false']; - } - return null; - }, -}); - -const UndefinedLiteral = createToken({ - name: 'UndefinedLiteral', - line_breaks: false, - pattern: (text, startOffset) => { - if (text.startsWith('undefined', startOffset) && isLitLookahead(text[startOffset + 9])) { - return ['undefined']; - } - return null; - }, -}); - -const NullLiteral = createToken({ - name: 'NullLiteral', - line_breaks: false, - pattern: (text, startOffset) => { - if (text.startsWith('null', startOffset) && isLitLookahead(text[startOffset + 4])) { - return ['null']; - } - return null; - }, -}); - -// Number literal (must come before ID since "-" is an ID char) -const NumberLiteral = createToken({ - name: 'NumberLiteral', - line_breaks: false, - pattern: (text, startOffset) => { - let i = startOffset; - if (text[i] === '-') i++; - if (i >= text.length || text[i] < '0' || text[i] > '9') return null; - while (i < text.length && text[i] >= '0' && text[i] <= '9') i++; - if (text[i] === '.' && text[i + 1] >= '0' && text[i + 1] <= '9') { - i++; - while (i < text.length && text[i] >= '0' && text[i] <= '9') i++; - } - if (!isLitLookahead(text[i])) return null; - return [text.substring(startOffset, i)]; - }, -}); - -// String literal -const StringLiteral = createToken({ - name: 'StringLiteral', - line_breaks: false, - pattern: (text, startOffset) => { - const quote = text[startOffset]; - if (quote !== '"' && quote !== "'") return null; - let i = startOffset + 1; - while (i < text.length) { - if (text[i] === '\\' && text[i + 1] === quote) { - i += 2; - continue; - } - if (text[i] === quote) { - return [text.substring(startOffset, i + 1)]; - } - i++; - } - return [text.substring(startOffset)]; - }, -}); - -// Bracket-escaped ID: [...] -const BracketID = createToken({ - name: 'BracketID', - line_breaks: false, - pattern: (text, startOffset) => { - if (text[startOffset] !== '[') return null; - let i = startOffset + 1; - while (i < text.length) { - if (text[i] === '\\' && (text[i + 1] === ']' || text[i + 1] === '\\')) { - i += 2; - continue; - } - if (text[i] === ']') { - return [text.substring(startOffset, i + 1)]; - } - i++; - } - return [text.substring(startOffset)]; - }, -}); - -// General ID (non-special characters) -const ID = createToken({ - name: 'ID', - pattern: /[^\s!"#%-,./;->@[\-^`{-~]+/, -}); - -// Invalid catch-all (single char) -const Invalid = createToken({ - name: 'Invalid', - pattern: /[^]/, -}); - -// Token order matters for the lexer -const allTokens = [ - WS, - OpenSexpr, - CloseSexpr, - Equals, - OpenBlockParams, - CloseBlockParams, - Data, - PrivateSep, - Sep, - BooleanLiteral, - UndefinedLiteral, - NullLiteral, - NumberLiteral, - StringLiteral, - BracketID, - ID, - Invalid, -]; - -const exprLexer = new Lexer(allTokens, { positionTracking: 'full' }); - -// ============================================================================ -// Chevrotain Expression Parser -// ============================================================================ - -class HbsExpressionParser extends EmbeddedActionsParser { - constructor() { - super(allTokens, { - recoveryEnabled: false, - maxLookahead: 3, - }); - - const $ = this; - - // ---- expression: path | literal | subExpression ---- - $.RULE('expression', () => { - return $.OR([ - { ALT: () => $.SUBRULE($.subExpression) }, - { ALT: () => $.SUBRULE($.helperName) }, - ]); - }); - - // ---- helperName: string | number | boolean | undefined | null | dataName | path ---- - $.RULE('helperName', () => { - return $.OR([ - { - ALT: () => { - const tok = $.CONSUME(StringLiteral); - return { kind: 'string', token: tok }; - }, - }, - { - ALT: () => { - const tok = $.CONSUME(NumberLiteral); - return { kind: 'number', token: tok }; - }, - }, - { - ALT: () => { - const tok = $.CONSUME(BooleanLiteral); - return { kind: 'boolean', token: tok }; - }, - }, - { - ALT: () => { - const tok = $.CONSUME(UndefinedLiteral); - return { kind: 'undefined', token: tok }; - }, - }, - { - ALT: () => { - const tok = $.CONSUME(NullLiteral); - return { kind: 'null', token: tok }; - }, - }, - { ALT: () => $.SUBRULE($.dataName) }, - { ALT: () => $.SUBRULE($.path) }, - ]); - }); - - // ---- path: segment (sep segment)* ---- - $.RULE('path', () => { - const segments = []; - const first = $.OR([{ ALT: () => $.CONSUME(ID) }, { ALT: () => $.CONSUME(BracketID) }]); - segments.push({ token: first, separator: undefined }); - - $.MANY(() => { - const sep = $.OR2([{ ALT: () => $.CONSUME(PrivateSep) }, { ALT: () => $.CONSUME(Sep) }]); - const seg = $.OR3([{ ALT: () => $.CONSUME2(ID) }, { ALT: () => $.CONSUME2(BracketID) }]); - segments.push({ token: seg, separator: sep.image }); - }); - - return { kind: 'path', segments, data: false }; - }); - - // ---- dataName: @ segment (sep segment)* ---- - $.RULE('dataName', () => { - const dataTok = $.CONSUME(Data); - const segments = []; - const first = $.OR([{ ALT: () => $.CONSUME(ID) }, { ALT: () => $.CONSUME(BracketID) }]); - segments.push({ token: first, separator: undefined }); - - $.MANY(() => { - const sep = $.OR2([{ ALT: () => $.CONSUME(PrivateSep) }, { ALT: () => $.CONSUME2(Sep) }]); - const seg = $.OR3([{ ALT: () => $.CONSUME2(ID) }, { ALT: () => $.CONSUME2(BracketID) }]); - segments.push({ token: seg, separator: sep.image }); - }); - - return { kind: 'path', segments, data: true, dataTok }; - }); - - // ---- subExpression: ( expression params? hash? ) ---- - $.RULE('subExpression', () => { - const openTok = $.CONSUME(OpenSexpr); - - let expr; - let params = []; - let hash; - - expr = $.SUBRULE($.expression); - - $.MANY(() => { - $.OR([ - { - GATE: () => $.isHashPairStart(), - ALT: () => { - hash = $.SUBRULE($.hash); - }, - }, - { - ALT: () => { - params.push($.SUBRULE2($.expression)); - }, - }, - ]); - }); - - const closeTok = $.CONSUME(CloseSexpr); - - return { kind: 'sub', path: expr, params, hash, openTok, closeTok }; - }); - - // ---- hash: hashPair+ ---- - $.RULE('hash', () => { - const pairs = []; - $.AT_LEAST_ONE(() => { - pairs.push($.SUBRULE($.hashPair)); - }); - return pairs; - }); - - // ---- hashPair: (ID | BracketID) = expression ---- - $.RULE('hashPair', () => { - const key = $.OR([{ ALT: () => $.CONSUME(ID) }, { ALT: () => $.CONSUME(BracketID) }]); - $.CONSUME(Equals); - const value = $.SUBRULE($.expression); - return { key, value }; - }); - - // ---- mustacheBody: expression params? hash? blockParams? ---- - // This is the top-level rule for content inside a mustache - $.RULE('mustacheBody', () => { - const expr = $.SUBRULE($.expression); - const params = []; - let hash; - let blockParams; - - $.MANY(() => { - $.OR([ - { - GATE: () => $.isBlockParamsStart(), - ALT: () => { - blockParams = $.SUBRULE($.blockParamsRule); - }, - }, - { - GATE: () => $.isHashPairStart(), - ALT: () => { - hash = $.SUBRULE($.hash); - }, - }, - { - ALT: () => { - params.push($.SUBRULE2($.expression)); - }, - }, - ]); - }); - - return { expr, params, hash, blockParams }; - }); - - // ---- hashOnlyBody: hash ---- - $.RULE('hashOnlyBody', () => { - return { hash: $.SUBRULE($.hash) }; - }); - - // ---- blockParams: "as |" ID+ "|" ---- - $.RULE('blockParamsRule', () => { - $.CONSUME(OpenBlockParams); - const names = []; - $.AT_LEAST_ONE(() => { - const tok = $.CONSUME(ID); - names.push(tok.image); - }); - $.CONSUME(CloseBlockParams); - return names; - }); - - // ---- closePath: just helperName for {{/...}} ---- - $.RULE('closePath', () => { - return $.SUBRULE($.helperName); - }); - - this.performSelfAnalysis(); - } - - // Gate: is the next token sequence an ID = (hash pair start)? - isHashPairStart() { - const tok1 = this.LA(1); - if (tok1.tokenType !== ID && tok1.tokenType !== BracketID) return false; - const tok2 = this.LA(2); - return tok2.tokenType === Equals; - } - - // Gate: is the next token "as |" (block params)? - isBlockParamsStart() { - return this.LA(1).tokenType === OpenBlockParams; - } -} - -// Singleton parser instance (Chevrotain parsers are designed to be reused) -const exprParser = new HbsExpressionParser(); - -// ============================================================================ -// Location tracking helper -// ============================================================================ - -class LocTracker { - constructor(input) { - this.input = input; - this.pos = 0; - this.line = 1; - this.column = 0; - } - - clone() { - const t = new LocTracker(this.input); - t.pos = this.pos; - t.line = this.line; - t.column = this.column; - return t; - } - - loc() { - return { line: this.line, column: this.column }; - } - - advance(n) { - if (n === undefined) n = 1; - for (let i = 0; i < n; i++) { - if (this.input[this.pos] === '\n') { - this.line++; - this.column = 0; - } else { - this.column++; - } - this.pos++; - } - } - - ch(offset) { - return this.input[this.pos + (offset || 0)]; - } - - peek(offset) { - return this.input[this.pos + (offset || 0)] || ''; - } - - startsWith(str) { - return this.input.startsWith(str, this.pos); - } - - remaining() { - return this.input.length - this.pos; - } - - eof() { - return this.pos >= this.input.length; - } -} - -// ============================================================================ -// Main parser class -// ============================================================================ - -export function chevrotainParse(input, options) { - const parser = new ChevrotainHbsParser(input, options); - return parser.parseRoot(); -} - -class ChevrotainHbsParser { - constructor(input, options) { - this.input = input; - this.options = options || {}; - this.t = new LocTracker(input); - this.srcName = this.options.srcName; - this._inEscapedMustache = false; - - // Pre-compute line/column for every position in the input - // so we can quickly map Chevrotain token offsets to source locations. - this._posToLoc = new Array(input.length + 1); - let line = 1; - let col = 0; - for (let i = 0; i <= input.length; i++) { - this._posToLoc[i] = { line, column: col }; - if (i < input.length) { - if (input[i] === '\n') { - line++; - col = 0; - } else { - col++; - } - } - } - - this.syntax = { - square: 'string', - hash(hash, loc) { - return { - type: 'HashLiteral', - pairs: hash.pairs, - loc, - }; - }, - }; - } - - /** - * Get line/column for an absolute position in the original input. - */ - locAt(pos) { - if (pos >= this._posToLoc.length) { - return this._posToLoc[this._posToLoc.length - 1]; - } - return this._posToLoc[pos]; - } - - /** - * Build a loc info object from absolute positions. - */ - locInfoFromPos(startPos, endPos) { - const start = this.locAt(startPos); - const end = this.locAt(endPos); - return { - source: this.srcName, - start: { line: start.line, column: start.column }, - end: { line: end.line, column: end.column }, - }; - } - - // ------ Location helpers ------ - - locInfo(start, end) { - return { - source: this.srcName, - start: { line: start.line, column: start.column }, - end: end - ? { line: end.line, column: end.column } - : { line: start.line, column: start.column }, - }; - } - - error(msg, loc) { - const line = loc ? loc.start.line : this.t.line; - const col = loc ? loc.start.column : this.t.column; - - const lines = this.input.split('\n'); - const sourceLine = lines.slice(0, line).join(''); - const pointer = '-'.repeat(sourceLine.length - (lines[line - 1] || '').length + col) + '^'; - - const fullMsg = `Parse error on line ${line}:\n${sourceLine}\n${pointer}\n${msg}`; - const err = new Error(fullMsg); - err.hash = { - text: '', - line: line - 1, - loc: { - first_line: line, - last_line: line, - first_column: col, - last_column: col, - }, - }; - throw err; - } - - stripFlags(open, close) { - return { - open: open.charAt(2) === '~', - close: close.charAt(close.length - 3) === '~', - }; - } - - stripComment(comment) { - return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, ''); - } - - idFromBracket(token) { - if (/^\[.*\]$/.test(token)) { - return token.substring(1, token.length - 1); - } - return token; - } - - // ------ Top-level parsing ------ - - parseRoot() { - return this.parseProgram(); - } - - parseProgram() { - const statements = []; - while (!this.t.eof()) { - const stmt = this.parseStatement(); - if (stmt) statements.push(stmt); - } - return this.prepareProgram(statements); - } - - parseStatement() { - if (this._inEscapedMustache) { - return this.parseContent(); - } - if (!this.t.startsWith('{{') || this.isEscapedMustache()) { - return this.parseContent(); - } - return this.parseMustacheOrBlock(); - } - - // ------ Content parsing ------ - - parseContent() { - const start = this.t.loc(); - const startPos = this.t.pos; - let value = ''; - - if (this._inEscapedMustache) { - this._inEscapedMustache = false; - this.t.advance(2); - value += '{{'; - while (!this.t.eof()) { - if (this.t.startsWith('{{')) break; - if (this.t.peek() === '\\') { - let scanPos = 0; - while (this.t.peek(scanPos) === '\\') scanPos++; - if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') break; - } - value += this.t.peek(); - this.t.advance(); - } - const end = this.t.loc(); - const original = this.input.slice(startPos, this.t.pos); - return { - type: 'ContentStatement', - original, - value, - loc: this.locInfo(start, end), - }; - } - - while (!this.t.eof()) { - if (this.t.startsWith('{{')) break; - - if (this.t.peek() === '\\') { - let backslashCount = 0; - let scanPos = 0; - while (this.t.peek(scanPos) === '\\') { - backslashCount++; - scanPos++; - } - if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') { - if (backslashCount % 2 === 1) { - for (let i = 0; i < backslashCount - 1; i++) value += '\\'; - this.t.advance(backslashCount); - this._inEscapedMustache = true; - break; - } else { - for (let i = 0; i < backslashCount - 1; i++) value += '\\'; - this.t.advance(backslashCount); - break; - } - } - } - - value += this.t.peek(); - this.t.advance(); - } - - if (!value) return null; - - const end = this.t.loc(); - return { - type: 'ContentStatement', - original: value, - value, - loc: this.locInfo(start, end), - }; - } - - // ------ Mustache / block dispatch ------ - - parseMustacheOrBlock() { - const outerStart = this.t.loc(); - const openStr = this.consumeOpen(); - - if (openStr === null) return this.parseContent(); - - const { type, raw } = openStr; - - switch (type) { - case 'COMMENT': - return this.handleComment(raw, outerStart); - case 'OPEN': - return this.handleMustache(raw, outerStart); - case 'OPEN_UNESCAPED': - return this.handleUnescapedMustache(raw, outerStart); - case 'OPEN_BLOCK': - return this.handleBlock(raw, outerStart); - case 'OPEN_INVERSE': - case 'OPEN_INVERSE_CHAIN': - this.error('Unexpected inverse at top level'); - break; - case 'INVERSE': - this.error('Unexpected inverse at top level'); - break; - case 'OPEN_ENDBLOCK': - this.error('Unexpected end block at top level'); - break; - case 'OPEN_PARTIAL': - return this.handlePartial(raw, outerStart); - case 'OPEN_PARTIAL_BLOCK': - return this.handlePartialBlock(raw, outerStart); - default: - this.error(`Unexpected token type: ${type}`); - } - } - - // ------ Open token detection (manual scanning) ------ - - consumeOpen() { - if (!this.t.startsWith('{{')) return null; - - const startPos = this.t.pos; - this.t.advance(2); - if (this.t.peek() === '~') this.t.advance(); - - const nextCh = this.t.peek(); - - if (nextCh === '!') return this.consumeComment(startPos); - - if (nextCh === '{') { - this.t.advance(); - return { type: 'OPEN_UNESCAPED', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '>') { - this.t.advance(); - return { type: 'OPEN_PARTIAL', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '#' && this.t.peek(1) === '>') { - this.t.advance(2); - return { type: 'OPEN_PARTIAL_BLOCK', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '#') { - this.t.advance(); - if (this.t.peek() === '*') this.t.advance(); - return { type: 'OPEN_BLOCK', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '/') { - this.t.advance(); - return { type: 'OPEN_ENDBLOCK', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '^') { - const savedPos = this.t.pos; - const savedLine = this.t.line; - const savedCol = this.t.column; - this.t.advance(); - this.skipWS(); - - let closeStrip = this.t.peek() === '~' && this.t.peek(1) === '}'; - if ( - this.t.startsWith('}}') || - (closeStrip && this.t.peek(1) === '}' && this.t.peek(2) === '}') - ) { - if (closeStrip) this.t.advance(); - this.t.advance(2); - return { type: 'INVERSE', raw: this.input.slice(startPos, this.t.pos) }; - } - - this.t.pos = savedPos; - this.t.line = savedLine; - this.t.column = savedCol; - this.t.advance(); - return { type: 'OPEN_INVERSE', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (this.matchElse()) { - const savedPos = this.t.pos; - const savedLine = this.t.line; - const savedCol = this.t.column; - this.t.advance(4); - this.skipWS(); - - let closeStrip = false; - if (this.t.peek() === '~' && this.t.peek(1) === '}') closeStrip = true; - if (this.t.startsWith('}}') || (closeStrip && this.t.startsWith('~}}'))) { - if (closeStrip) this.t.advance(); - this.t.advance(2); - return { type: 'INVERSE', raw: this.input.slice(startPos, this.t.pos) }; - } - - this.t.pos = savedPos; - this.t.line = savedLine; - this.t.column = savedCol; - this.t.advance(4); - return { type: 'OPEN_INVERSE_CHAIN', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '&') { - this.t.advance(); - return { type: 'OPEN', raw: this.input.slice(startPos, this.t.pos) }; - } - - if (nextCh === '*') { - this.t.advance(); - return { type: 'OPEN', raw: this.input.slice(startPos, this.t.pos) }; - } - - return { type: 'OPEN', raw: this.input.slice(startPos, this.t.pos) }; - } - - matchElse() { - if ( - this.t.peek() === 'e' && - this.t.peek(1) === 'l' && - this.t.peek(2) === 's' && - this.t.peek(3) === 'e' - ) { - const after = this.t.peek(4); - return !after || isWhitespace(after) || after === '~' || after === '}'; - } - return false; - } - - consumeComment(startPos) { - this.t.advance(); // skip ! - if (this.t.peek() === '-' && this.t.peek(1) === '-') { - while (!this.t.eof()) { - if (this.t.startsWith('--')) { - const afterDash = this.t.peek(2); - if (afterDash === '}' && this.t.peek(3) === '}') { - this.t.advance(4); - break; - } - if (afterDash === '~' && this.t.peek(3) === '}' && this.t.peek(4) === '}') { - this.t.advance(5); - break; - } - } - this.t.advance(); - } - } else { - while (!this.t.eof()) { - if (this.t.startsWith('}}')) { - this.t.advance(2); - break; - } - this.t.advance(); - } - } - return { type: 'COMMENT', raw: this.input.slice(startPos, this.t.pos) }; - } - - handleComment(raw, start) { - const end = this.t.loc(); - return { - type: 'CommentStatement', - value: this.stripComment(raw), - strip: { - open: raw.charAt(2) === '~', - close: raw.charAt(raw.length - 3) === '~', - }, - loc: this.locInfo(start, end), - }; - } - - // ------ Expression extraction & Chevrotain parsing ------ - - /** - * Extract expression text from current position up to the appropriate - * close marker, respecting string literals and nested sub-expressions. - */ - extractExpressionText(closeKind) { - let i = this.t.pos; - let depth = 0; - let inString = false; - let stringChar = ''; - - while (i < this.input.length) { - const ch = this.input[i]; - - if (inString) { - if (ch === '\\') { - i += 2; - continue; - } - if (ch === stringChar) inString = false; - i++; - continue; - } - - if (ch === '"' || ch === "'") { - inString = true; - stringChar = ch; - i++; - continue; - } - - if (ch === '(') { - depth++; - i++; - continue; - } - if (ch === ')') { - if (depth > 0) { - depth--; - i++; - continue; - } - } - - if (depth === 0) { - if (closeKind === 'unescaped') { - if (ch === '}' && this.input[i + 1] === '}' && this.input[i + 2] === '}') break; - if ( - ch === '}' && - this.input[i + 1] === '~' && - this.input[i + 2] === '}' && - this.input[i + 3] === '}' - ) - break; - if ( - ch === '~' && - this.input[i + 1] === '}' && - this.input[i + 2] === '}' && - this.input[i + 3] === '}' - ) - break; - } else if (closeKind === 'rawblock') { - if ( - ch === '}' && - this.input[i + 1] === '}' && - this.input[i + 2] === '}' && - this.input[i + 3] === '}' - ) - break; - if ( - ch === '~' && - this.input[i + 1] === '}' && - this.input[i + 2] === '}' && - this.input[i + 3] === '}' && - this.input[i + 4] === '}' - ) - break; - } else { - // normal close: }} or ~}} - if (ch === '}' && this.input[i + 1] === '}') break; - if (ch === '~' && this.input[i + 1] === '}' && this.input[i + 2] === '}') break; - } - } - - i++; - } - - return this.input.substring(this.t.pos, i); - } - - /** - * Tokenize and parse expression text using Chevrotain. - */ - chevrotainParseExpr(exprText, ruleName, errorLoc) { - const lexResult = exprLexer.tokenize(exprText); - - if (lexResult.errors.length > 0) { - this.error(`Lexer error: ${lexResult.errors[0].message}`, errorLoc); - } - - // Check for INVALID tokens - for (const tok of lexResult.tokens) { - if (tok.tokenType === Invalid) { - // Advance the outer tracker to match the invalid token position - const advanceBy = tok.startOffset; - for (let i = 0; i < advanceBy; i++) this.t.advance(); - this.t.advance(); // past the invalid char - this.error( - `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` - ); - } - } - - exprParser.input = lexResult.tokens; - const result = exprParser[ruleName](); - - if (exprParser.errors.length > 0) { - const chevErr = exprParser.errors[0]; - const tokImage = chevErr.token ? `'${chevErr.token.image}'` : "'EOF'"; - let gotToken; - if (tokImage === "''") { - gotToken = "'EOF'"; - } else { - gotToken = tokImage; - } - this.error( - `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${gotToken}`, - errorLoc - ); - } - - return result; - } - - // ------ AST node construction from Chevrotain parse results ------ - - /** - * Get the location of a Chevrotain token mapped to original input coordinates. - * @param {Object} tok - A Chevrotain token with startOffset/endOffset - * @param {number} basePos - The position in the original input where the - * expression text starts (so tok.startOffset + basePos = absolute position) - */ - tokenLoc(tok, basePos) { - const startPos = basePos + tok.startOffset; - // endOffset is inclusive in Chevrotain, so +1 for exclusive end - const endPos = basePos + tok.endOffset + 1; - return this.locInfoFromPos(startPos, endPos); - } - - /** - * Get start/end positions for a range of tokens. - */ - tokenRangeLoc(firstTok, lastTok, basePos) { - const startPos = basePos + firstTok.startOffset; - const endPos = basePos + lastTok.endOffset + 1; - return this.locInfoFromPos(startPos, endPos); - } - - buildAst(result, basePos) { - if (!result) return null; - - switch (result.kind) { - case 'string': { - const tok = result.token; - const raw = tok.image; - const quote = raw[0]; - let value = raw.substring(1, raw.length - 1); - const escaped = new RegExp('\\\\' + quote.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'g'); - value = value.replace(escaped, quote); - return { - type: 'StringLiteral', - value, - original: value, - loc: this.tokenLoc(tok, basePos), - }; - } - - case 'number': { - const tok = result.token; - const value = Number(tok.image); - return { - type: 'NumberLiteral', - value, - original: value, - loc: this.tokenLoc(tok, basePos), - }; - } - - case 'boolean': { - const tok = result.token; - const value = tok.image === 'true'; - return { - type: 'BooleanLiteral', - value, - original: value, - loc: this.tokenLoc(tok, basePos), - }; - } - - case 'undefined': - return { - type: 'UndefinedLiteral', - original: undefined, - value: undefined, - loc: this.tokenLoc(result.token, basePos), - }; - - case 'null': - return { - type: 'NullLiteral', - original: null, - value: null, - loc: this.tokenLoc(result.token, basePos), - }; - - case 'path': - return this.buildPathExpression(result, basePos); - - case 'sub': { - const path = this.buildAst(result.path, basePos); - const params = result.params.map((p) => this.buildAst(p, basePos)); - let hash; - if (result.hash) hash = this.buildHash(result.hash, basePos); - return { - type: 'SubExpression', - path, - params, - hash, - loc: this.locInfoFromPos( - basePos + result.openTok.startOffset, - basePos + result.closeTok.endOffset + 1 - ), - }; - } - - default: - return result; - } - } - - buildPathExpression(result, basePos) { - const { segments, data } = result; - const parts = []; - let isThis = false; - let original = data ? '@' : ''; - - for (let i = 0; i < segments.length; i++) { - const seg = segments[i]; - const rawText = seg.token.image; - const separator = seg.separator; - let part, partOriginal; - - if (/^\[.*\]$/.test(rawText)) { - let content = rawText.substring(1, rawText.length - 1); - content = content.replace(/\\\\/g, '\\').replace(/\\\]/g, ']'); - part = content; - partOriginal = rawText; - } else { - part = rawText; - partOriginal = rawText; - } - - const partPrefix = separator === '.#' ? '#' : ''; - original += (separator || '') + partOriginal; - - if (partOriginal === part && (part === '..' || part === '.' || part === 'this')) { - if (parts.length > 0) { - const firstTok = segments[0].token; - const lastTok = segments[segments.length - 1].token; - this.error('Invalid path: ' + original, this.tokenRangeLoc(firstTok, lastTok, basePos)); - } else if (part === 'this') { - isThis = true; - } - } else { - parts.push(`${partPrefix}${part}`); - } - } - - const head = parts.shift(); - const tail = parts; - - // Compute location from first token to last token - const firstTok = data ? result.dataTok : segments[0].token; - const lastTok = segments[segments.length - 1].token; - - return { - type: 'PathExpression', - this: isThis, - data, - head, - tail, - parts: head !== undefined ? [head, ...tail] : tail, - original, - loc: this.tokenRangeLoc(firstTok, lastTok, basePos), - }; - } - - buildHash(pairs, basePos) { - const astPairs = pairs.map((p) => { - const keyRaw = p.key.image; - const key = /^\[.*\]$/.test(keyRaw) ? keyRaw.substring(1, keyRaw.length - 1) : keyRaw; - const value = this.buildAst(p.value, basePos); - // HashPair loc: from key token to value's end - const valueLoc = value.loc; - return { - type: 'HashPair', - key, - value, - loc: { - source: this.srcName, - start: this.locAt(basePos + p.key.startOffset), - end: valueLoc.end, - }, - }; - }); - - const firstPair = astPairs[0]; - const lastPair = astPairs[astPairs.length - 1]; - - return { - type: 'Hash', - pairs: astPairs, - loc: { - source: this.srcName, - start: firstPair.loc.start, - end: lastPair.loc.end, - }, - }; - } - - // ------ Mustache handlers ------ - - handleMustache(openRaw, outerStart) { - const basePos = this.t.pos; - const exprText = this.extractExpressionText('normal'); - - if (!exprText.trim()) { - const got = "'CLOSE'"; - this.error( - `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${got}` - ); - } - - // Check for hash-only mustache - const trimmed = exprText.trim(); - if (this.isHashOnlyText(trimmed)) { - const parsed = this.chevrotainParseExpr( - exprText, - 'hashOnlyBody', - this.locInfo(outerStart, this.t.loc()) - ); - this.t.advance(exprText.length); - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - const loc = this.locInfo(outerStart, end); - const hash = this.buildHash(parsed.hash, basePos); - const hashLiteralNode = this.syntax.hash(hash, loc); - - return this.prepareMustache( - hashLiteralNode, - [], - undefined, - openRaw, - this.stripFlags(openRaw, closeRaw), - outerStart, - end - ); - } - - const parsed = this.chevrotainParseExpr( - exprText, - 'mustacheBody', - this.locInfo(outerStart, this.t.loc()) - ); - this.t.advance(exprText.length); - - const expr = this.buildAst(parsed.expr, basePos); - const params = parsed.params.map((p) => this.buildAst(p, basePos)); - let hash; - if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); - - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - - return this.prepareMustache( - expr, - params, - hash, - openRaw, - this.stripFlags(openRaw, closeRaw), - outerStart, - end - ); - } - - handleUnescapedMustache(openRaw, outerStart) { - const basePos = this.t.pos; - const exprText = this.extractExpressionText('unescaped'); - - const parsed = this.chevrotainParseExpr( - exprText, - 'mustacheBody', - this.locInfo(outerStart, this.t.loc()) - ); - this.t.advance(exprText.length); - - const expr = this.buildAst(parsed.expr, basePos); - const params = parsed.params.map((p) => this.buildAst(p, basePos)); - let hash; - if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); - - const closeRaw = this.consumeCloseUnescaped(); - const end = this.t.loc(); - - return this.prepareMustache( - expr, - params, - hash, - openRaw, - this.stripFlags(openRaw, closeRaw), - outerStart, - end - ); - } - - prepareMustache(path, params, hash, open, strip, startLoc, endLoc) { - if (/\*/.test(open)) { - this.error( - 'Handlebars decorators are not supported in Glimmer', - this.locInfo(startLoc, endLoc) - ); - } - - let escapeFlag = open.charAt(3) || open.charAt(2); - let escaped = escapeFlag !== '{' && escapeFlag !== '&'; - - return { - type: 'MustacheStatement', - path, - params, - hash, - escaped, - strip, - loc: this.locInfo(startLoc, endLoc), - }; - } - - handlePartial(openRaw, outerStart) { - const basePos = this.t.pos; - const exprText = this.extractExpressionText('normal'); - - const parsed = this.chevrotainParseExpr( - exprText, - 'mustacheBody', - this.locInfo(outerStart, this.t.loc()) - ); - this.t.advance(exprText.length); - - const expr = this.buildAst(parsed.expr, basePos); - const params = parsed.params.map((p) => this.buildAst(p, basePos)); - let hash; - if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); - - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - - return { - type: 'PartialStatement', - name: expr, - params, - hash, - indent: '', - strip: this.stripFlags(openRaw, closeRaw), - loc: this.locInfo(outerStart, end), - }; - } - - handlePartialBlock(openRaw, outerStart) { - this.error( - 'Handlebars partial blocks are not supported in Glimmer', - this.locInfo(outerStart, this.t.loc()) - ); - } - - // ------ Block handling ------ - - handleBlock(openRaw, outerStart) { - if (/\*/.test(openRaw)) { - this.error( - 'Handlebars decorator blocks are not supported in Glimmer', - this.locInfo(outerStart, this.t.loc()) - ); - } - - const basePos = this.t.pos; - const exprText = this.extractExpressionText('normal'); - - const parsed = this.chevrotainParseExpr( - exprText, - 'mustacheBody', - this.locInfo(outerStart, this.t.loc()) - ); - this.t.advance(exprText.length); - - const helperExpr = this.buildAst(parsed.expr, basePos); - const params = parsed.params.map((p) => this.buildAst(p, basePos)); - let hash; - if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); - - const closeRaw = this.consumeClose(); - const openBlock = { - open: openRaw, - path: helperExpr, - params, - hash, - blockParams: parsed.blockParams, - strip: this.stripFlags(openRaw, closeRaw), - }; - - const program = this.parseProgramBody(); - - let inverseAndProgram; - if (this.t.startsWith('{{')) { - const peeked = this.peekMustacheType(); - if (peeked === 'INVERSE') { - inverseAndProgram = this.parseInverseAndProgram(); - } else if (peeked === 'OPEN_INVERSE_CHAIN') { - inverseAndProgram = this.parseInverseChain(); - } - } - - const closeBlock = this.parseCloseBlock(); - const end = this.t.loc(); - - return this.prepareBlock( - openBlock, - program, - inverseAndProgram, - closeBlock, - false, - outerStart, - end - ); - } - - prepareBlock(openBlock, program, inverseAndProgram, close, inverted, startLoc, endLoc) { - if (close && close.path) this.validateClose(openBlock, close); - - program.blockParams = openBlock.blockParams; - - let inverse, inverseStrip; - - if (inverseAndProgram) { - if (inverseAndProgram.chain) { - inverseAndProgram.program.body[0].closeStrip = close.strip; - } - inverseStrip = inverseAndProgram.strip; - inverse = inverseAndProgram.program; - } - - if (inverted) { - inverted = inverse; - inverse = program; - program = inverted; - } - - return { - type: 'BlockStatement', - path: openBlock.path, - params: openBlock.params, - hash: openBlock.hash, - program, - inverse, - openStrip: openBlock.strip, - inverseStrip, - closeStrip: close && close.strip, - loc: this.locInfo(startLoc, endLoc), - }; - } - - validateClose(openBlock, close) { - let closeName = close.path ? close.path.original : close; - if (openBlock.path.original !== closeName) { - this.error(openBlock.path.original + " doesn't match " + closeName, openBlock.path.loc); - } - } - - parseProgramBody() { - const statements = []; - while (!this.t.eof()) { - if (this.t.startsWith('{{') && !this.isEscapedMustache()) { - const peeked = this.peekMustacheType(); - if ( - peeked === 'OPEN_ENDBLOCK' || - peeked === 'INVERSE' || - peeked === 'OPEN_INVERSE_CHAIN' || - peeked === 'OPEN_INVERSE' - ) { - break; - } - const stmt = this.parseMustacheOrBlock(); - if (stmt) statements.push(stmt); - } else { - const content = this.parseContent(); - if (content) statements.push(content); - } - } - return this.prepareProgram(statements); - } - - parseInverseAndProgram() { - const openResult = this.consumeOpen(); - const raw = openResult.raw; - const strip = { - open: raw.charAt(2) === '~', - close: raw.charAt(raw.length - 3) === '~', - }; - const program = this.parseProgramBody(); - return { strip, program }; - } - - parseInverseChain() { - const outerStart = this.t.loc(); - const openResult = this.consumeOpen(); - const openRaw = openResult.raw; - - if (openResult.type === 'OPEN_INVERSE_CHAIN' || openResult.type === 'OPEN_INVERSE') { - const basePos = this.t.pos; - const exprText = this.extractExpressionText('normal'); - - const parsed = this.chevrotainParseExpr( - exprText, - 'mustacheBody', - this.locInfo(outerStart, this.t.loc()) - ); - this.t.advance(exprText.length); - - const helperExpr = this.buildAst(parsed.expr, basePos); - const params = parsed.params.map((p) => this.buildAst(p, basePos)); - let hash; - if (parsed.hash) hash = this.buildHash(parsed.hash, basePos); - - const closeRaw = this.consumeClose(); - const openInverseChain = { - path: helperExpr, - params, - hash, - blockParams: parsed.blockParams, - strip: this.stripFlags(openRaw, closeRaw), - }; - - const program = this.parseProgramBody(); - - let inverseChain; - if (this.t.startsWith('{{')) { - const peeked = this.peekMustacheType(); - if (peeked === 'OPEN_INVERSE_CHAIN') { - inverseChain = this.parseInverseChain(); - } else if (peeked === 'INVERSE') { - inverseChain = this.parseInverseAndProgram(); - } - } - - const end = this.t.loc(); - const inverse = this.prepareBlock( - openInverseChain, - program, - inverseChain, - inverseChain, - false, - outerStart, - end - ); - const wrappedProgram = this.prepareProgram([inverse], program.loc); - wrappedProgram.chained = true; - - return { strip: openInverseChain.strip, program: wrappedProgram, chain: true }; - } - - this.error('Unexpected inverse chain type'); - } - - parseCloseBlock() { - if (!this.t.startsWith('{{')) return null; - - const openResult = this.consumeOpen(); - if (openResult.type !== 'OPEN_ENDBLOCK') { - this.error('Expected close block, got ' + openResult.type); - } - - const basePos = this.t.pos; - const exprText = this.extractExpressionText('normal'); - - const parsed = this.chevrotainParseExpr( - exprText, - 'closePath', - this.locInfoFromPos(basePos, this.t.pos) - ); - this.t.advance(exprText.length); - - const path = this.buildAst(parsed, basePos); - const closeRaw = this.consumeClose(); - - return { - path, - strip: this.stripFlags(openResult.raw, closeRaw), - }; - } - - peekMustacheType() { - if (!this.t.startsWith('{{')) return null; - const saved = this.t.clone(); - const openResult = this.consumeOpen(); - const type = openResult ? openResult.type : null; - this.t = saved; - return type; - } - - prepareProgram(statements, loc) { - if (!loc && statements.length) { - const firstLoc = statements[0].loc; - const lastLoc = statements[statements.length - 1].loc; - if (firstLoc && lastLoc) { - loc = { - source: firstLoc.source, - start: { line: firstLoc.start.line, column: firstLoc.start.column }, - end: { line: lastLoc.end.line, column: lastLoc.end.column }, - }; - } - } - return { - type: 'Program', - body: statements, - strip: {}, - loc, - }; - } - - // ------ Close token consumption ------ - - consumeClose() { - const startPos = this.t.pos; - if (this.t.peek() === '~') this.t.advance(); - if (this.t.peek() === '}' && this.t.peek(1) === '}') { - this.t.advance(2); - return this.input.slice(startPos, this.t.pos); - } - this.t.advance(); - this.error( - `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` - ); - } - - consumeCloseUnescaped() { - const startPos = this.t.pos; - if (this.t.peek() === '}') { - this.t.advance(); - if (this.t.peek() === '~') this.t.advance(); - if (this.t.peek() === '}' && this.t.peek(1) === '}') { - this.t.advance(2); - return this.input.slice(startPos, this.t.pos); - } - } - if (this.input[startPos] === '~') { - this.t.advance(); - if (this.t.peek() === '}' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { - this.t.advance(3); - return this.input.slice(startPos, this.t.pos); - } - } - this.error('Expected closing }}}'); - } - - // ------ Utility methods ------ - - skipWS() { - while (!this.t.eof() && isWhitespace(this.t.peek())) { - this.t.advance(); - } - } - - isEscapedMustache() { - if (this.t.peek() !== '\\') return false; - let count = 0; - while (this.t.peek(count) === '\\') count++; - return count % 2 === 1 && this.t.peek(count) === '{' && this.t.peek(count + 1) === '{'; - } - - /** - * Check if expression text is hash-only (starts with ID= ...). - */ - isHashOnlyText(text) { - let i = 0; - if (text[i] === '[') { - while (i < text.length && text[i] !== ']') i++; - if (text[i] === ']') i++; - } else { - if (!isIDChar(text[i])) return false; - while (i < text.length && isIDChar(text[i])) i++; - } - while (i < text.length && /\s/.test(text[i])) i++; - return text[i] === '='; - } -} diff --git a/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js b/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js new file mode 100644 index 00000000000..e441d556472 --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js @@ -0,0 +1,1096 @@ +/** + * Outer scanner for Handlebars templates. + * + * Handles content scanning, {{ / }} boundary detection, backslash escaping, + * comments, blocks, inverse chains, raw blocks, partials, and decorators. + * Delegates expression parsing (paths, literals, sub-expressions, hashes, + * block params) to the Peggy-generated parser. + * + * Produces the same HBS AST structure (Program, MustacheStatement, + * BlockStatement, ContentStatement, CommentStatement, PathExpression, + * SubExpression, Hash, HashPair, and literals) that the old Jison/rd parser + * produced, so the rest of the pipeline (WhitespaceControl, HandlebarsNodeVisitors) + * continues to work unchanged. + */ + +import { parse as peggyParse } from './parser.js'; + +// ============================================================================ +// Character helpers +// ============================================================================ + +function isWhitespace(ch) { + return /^\s$/u.test(ch); +} + +// ============================================================================ +// Location tracking +// ============================================================================ + +class LocTracker { + constructor(input) { + this.input = input; + this.pos = 0; + this.line = 1; + this.column = 0; + } + + clone() { + const t = new LocTracker(this.input); + t.pos = this.pos; + t.line = this.line; + t.column = this.column; + return t; + } + + loc() { + return { line: this.line, column: this.column }; + } + + advance(n) { + if (n === undefined) n = 1; + for (let i = 0; i < n; i++) { + if (this.input[this.pos] === '\n') { + this.line++; + this.column = 0; + } else { + this.column++; + } + this.pos++; + } + } + + ch(offset) { + return this.input[this.pos + (offset || 0)]; + } + + peek(offset) { + return this.input[this.pos + (offset || 0)] || ''; + } + + startsWith(str) { + return this.input.startsWith(str, this.pos); + } + + remaining() { + return this.input.length - this.pos; + } + + eof() { + return this.pos >= this.input.length; + } +} + +// ============================================================================ +// Scanner +// ============================================================================ + +export function peggyParseTemplate(input, options) { + const scanner = new HBSScanner(input, options); + return scanner.parseRoot(); +} + +class HBSScanner { + constructor(input, options) { + this.input = input; + this.options = options || {}; + this.t = new LocTracker(input); + this.srcName = this.options.srcName; + this._inEscapedMustache = false; + + this.syntax = { + square: 'string', + hash: function (hash, loc) { + return { + type: 'HashLiteral', + pairs: hash.pairs, + loc, + }; + }, + }; + } + + locInfo(start, end) { + return { + source: this.srcName, + start: { line: start.line, column: start.column }, + end: end + ? { line: end.line, column: end.column } + : { line: start.line, column: start.column }, + }; + } + + error(msg, loc) { + const line = loc ? loc.start.line : this.t.line; + const col = loc ? loc.start.column : this.t.column; + + const lines = this.input.split('\n'); + const sourceLine = lines.slice(0, line).join(''); + const pointer = '-'.repeat(sourceLine.length - (lines[line - 1] || '').length + col) + '^'; + + const fullMsg = `Parse error on line ${line}:\n${sourceLine}\n${pointer}\n${msg}`; + const err = new Error(fullMsg); + err.hash = { + text: '', + line: line - 1, + loc: { + first_line: line, + last_line: line, + first_column: col, + last_column: col, + }, + }; + throw err; + } + + stripFlags(open, close) { + return { + open: open.charAt(2) === '~', + close: close.charAt(close.length - 3) === '~', + }; + } + + stripComment(comment) { + return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, ''); + } + + id(token) { + if (/^\[.*\]$/.test(token)) { + return token.substring(1, token.length - 1); + } + return token; + } + + // ============================================================================ + // Top-level parsing + // ============================================================================ + + parseRoot() { + return this.parseProgram(); + } + + parseProgram() { + const statements = []; + + while (!this.t.eof()) { + const stmt = this.parseStatement(); + if (stmt) { + statements.push(stmt); + } + } + + return this.prepareProgram(statements); + } + + parseStatement() { + if (this._inEscapedMustache) { + return this.parseContent(); + } + + if (!this.t.startsWith('{{') || this.isEscapedMustache()) { + return this.parseContent(); + } + + return this.parseMustacheOrBlock(); + } + + parseContent() { + const start = this.t.loc(); + const startPos = this.t.pos; + let value = ''; + + if (this._inEscapedMustache) { + this._inEscapedMustache = false; + this.t.advance(2); + value += '{{'; + while (!this.t.eof()) { + if (this.t.startsWith('{{')) break; + if (this.t.peek() === '\\') { + let scanPos = 0; + while (this.t.peek(scanPos) === '\\') scanPos++; + if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') break; + } + value += this.t.peek(); + this.t.advance(); + } + const end = this.t.loc(); + const original = this.input.slice(startPos, this.t.pos); + return { + type: 'ContentStatement', + original, + value, + loc: this.locInfo(start, end), + }; + } + + while (!this.t.eof()) { + if (this.t.startsWith('{{')) { + break; + } + + if (this.t.peek() === '\\') { + let backslashCount = 0; + let scanPos = 0; + while (this.t.peek(scanPos) === '\\') { + backslashCount++; + scanPos++; + } + + if (this.t.peek(scanPos) === '{' && this.t.peek(scanPos + 1) === '{') { + if (backslashCount % 2 === 1) { + for (let i = 0; i < backslashCount - 1; i++) { + value += '\\'; + } + this.t.advance(backslashCount); + this._inEscapedMustache = true; + break; + } else { + for (let i = 0; i < backslashCount - 1; i++) { + value += '\\'; + } + this.t.advance(backslashCount); + break; + } + } + } + + value += this.t.peek(); + this.t.advance(); + } + + if (!value) return null; + + const end = this.t.loc(); + + return { + type: 'ContentStatement', + original: value, + value, + loc: this.locInfo(start, end), + }; + } + + // ============================================================================ + // Mustache / block dispatch + // ============================================================================ + + parseMustacheOrBlock() { + const outerStart = this.t.loc(); + const openStr = this.consumeOpen(); + + if (openStr === null) { + return this.parseContent(); + } + + const { type, raw } = openStr; + + switch (type) { + case 'COMMENT': + return this.handleComment(raw, outerStart); + case 'OPEN': + return this.handleMustache(raw, outerStart); + case 'OPEN_UNESCAPED': + return this.handleUnescapedMustache(raw, outerStart); + case 'OPEN_BLOCK': + return this.handleBlock(raw, outerStart); + case 'OPEN_INVERSE': + case 'OPEN_INVERSE_CHAIN': + this.error('Unexpected inverse at top level'); + break; + case 'INVERSE': + this.error('Unexpected inverse at top level'); + break; + case 'OPEN_ENDBLOCK': + this.error('Unexpected end block at top level'); + break; + case 'OPEN_PARTIAL': + return this.handlePartial(raw, outerStart); + case 'OPEN_PARTIAL_BLOCK': + return this.handlePartialBlock(raw, outerStart); + default: + this.error(`Unexpected token type: ${type}`); + } + } + + // ============================================================================ + // Open token consumption + // ============================================================================ + + consumeOpen() { + if (!this.t.startsWith('{{')) return null; + + const startPos = this.t.pos; + this.t.advance(2); + + if (this.t.peek() === '~') { + this.t.advance(); + } + + const nextCh = this.t.peek(); + + if (nextCh === '!') { + return this.consumeComment(startPos); + } + + if (nextCh === '{') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_UNESCAPED', raw }; + } + + if (nextCh === '>') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_PARTIAL', raw }; + } + + if (nextCh === '#' && this.t.peek(1) === '>') { + this.t.advance(2); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_PARTIAL_BLOCK', raw }; + } + + if (nextCh === '#') { + this.t.advance(); + if (this.t.peek() === '*') { + this.t.advance(); + } + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_BLOCK', raw }; + } + + if (nextCh === '/') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_ENDBLOCK', raw }; + } + + if (nextCh === '^') { + const savedPos = this.t.pos; + const savedLine = this.t.line; + const savedCol = this.t.column; + this.t.advance(); + + this.skipWS(); + + let closeStrip = this.t.peek() === '~' && this.t.peek(1) === '}'; + + if ( + this.t.startsWith('}}') || + (closeStrip && this.t.peek(1) === '}' && this.t.peek(2) === '}') + ) { + if (closeStrip) this.t.advance(); + this.t.advance(2); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'INVERSE', raw }; + } + + this.t.pos = savedPos; + this.t.line = savedLine; + this.t.column = savedCol; + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_INVERSE', raw }; + } + + if (this.matchElse()) { + const savedPos = this.t.pos; + const savedLine = this.t.line; + const savedCol = this.t.column; + + this.t.advance(4); + + this.skipWS(); + + let closeStrip = false; + if (this.t.peek() === '~' && this.t.peek(1) === '}') { + closeStrip = true; + } + if (this.t.startsWith('}}') || (closeStrip && this.t.startsWith('~}}'))) { + if (closeStrip) this.t.advance(); + this.t.advance(2); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'INVERSE', raw }; + } + + this.t.pos = savedPos; + this.t.line = savedLine; + this.t.column = savedCol; + this.t.advance(4); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN_INVERSE_CHAIN', raw }; + } + + if (nextCh === '&') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN', raw }; + } + + if (nextCh === '*') { + this.t.advance(); + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN', raw }; + } + + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'OPEN', raw }; + } + + matchElse() { + if ( + this.t.peek() === 'e' && + this.t.peek(1) === 'l' && + this.t.peek(2) === 's' && + this.t.peek(3) === 'e' + ) { + const after = this.t.peek(4); + return !after || isWhitespace(after) || after === '~' || after === '}'; + } + return false; + } + + consumeComment(startPos) { + this.t.advance(); // skip ! + + if (this.t.peek() === '-' && this.t.peek(1) === '-') { + while (!this.t.eof()) { + if (this.t.startsWith('--')) { + const afterDash = this.t.peek(2); + if (afterDash === '}' && this.t.peek(3) === '}') { + this.t.advance(4); + break; + } + if (afterDash === '~' && this.t.peek(3) === '}' && this.t.peek(4) === '}') { + this.t.advance(5); + break; + } + } + this.t.advance(); + } + } else { + while (!this.t.eof()) { + if (this.t.startsWith('}}')) { + this.t.advance(2); + break; + } + this.t.advance(); + } + } + + const raw = this.input.slice(startPos, this.t.pos); + return { type: 'COMMENT', raw }; + } + + handleComment(raw, start) { + const end = this.t.loc(); + const value = this.stripComment(raw); + const strip = { + open: raw.charAt(2) === '~', + close: raw.charAt(raw.length - 3) === '~', + }; + + return { + type: 'CommentStatement', + value, + strip, + loc: this.locInfo(start, end), + }; + } + + // ============================================================================ + // Mustache handlers — delegate expression parsing to Peggy + // ============================================================================ + + /** + * Extract the expression text between the current position and the closing + * delimiter (}} or }}}), then pass it to the Peggy parser. + */ + extractExpressionText(unescaped) { + const startPos = this.t.pos; + + // Scan ahead to find the close delimiter, respecting nesting of sub-expressions + // and string literals. + let depth = 0; + let inString = false; + let stringQuote = ''; + + while (!this.t.eof()) { + const ch = this.t.peek(); + + if (inString) { + if (ch === '\\') { + this.t.advance(2); + continue; + } + if (ch === stringQuote) { + inString = false; + } + this.t.advance(); + continue; + } + + if (ch === '"' || ch === "'") { + inString = true; + stringQuote = ch; + this.t.advance(); + continue; + } + + if (ch === '(') { + depth++; + this.t.advance(); + continue; + } + + if (ch === ')') { + depth--; + this.t.advance(); + continue; + } + + if (depth === 0) { + if (unescaped) { + // Close is }}} or }~}} or ~}}} + if (ch === '}' && this.t.peek(1) === '}' && this.t.peek(2) === '}') break; + if ( + ch === '}' && + this.t.peek(1) === '~' && + this.t.peek(2) === '}' && + this.t.peek(3) === '}' + ) + break; + if ( + ch === '~' && + this.t.peek(1) === '}' && + this.t.peek(2) === '}' && + this.t.peek(3) === '}' + ) + break; + } else { + // Close is }} or ~}} + if (ch === '~' && this.t.peek(1) === '}' && this.t.peek(2) === '}') break; + if (ch === '}' && this.t.peek(1) === '}') break; + } + } + + this.t.advance(); + } + + return this.input.slice(startPos, this.t.pos); + } + + /** + * Parse an expression string using the Peggy parser and apply location offsets. + */ + parseExpression(exprText, baseLocLine, baseLocCol) { + if (!exprText.trim()) { + // Empty expression + const got = this.t.peek() === '~' ? "'CLOSE'" : "'CLOSE'"; + this.error( + `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got ${got}` + ); + } + + try { + const result = peggyParse(exprText, { + grammarSource: this.srcName, + // Pass offset for Peggy location tracking + }); + // Adjust locations: Peggy thinks it's parsing from line 1, col 1. + // We need to offset to the actual position in the template. + this.adjustLocations(result, baseLocLine, baseLocCol, exprText); + return result; + } catch (e) { + if (e.name === 'SyntaxError' && e.location) { + // Remap Peggy error to our error format + const errLine = baseLocLine + e.location.start.line - 1; + const errCol = + e.location.start.line === 1 + ? baseLocCol + e.location.start.column - 1 + : e.location.start.column - 1; + this.error( + `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got 'INVALID'`, + this.locInfo({ line: errLine, column: errCol }, { line: errLine, column: errCol }) + ); + } + throw e; + } + } + + /** + * Recursively adjust all loc nodes in a Peggy result to be relative to + * the template position. + */ + adjustLocations(node, baseLine, baseCol, exprText) { + if (!node || typeof node !== 'object') return; + + if (Array.isArray(node)) { + for (const item of node) { + this.adjustLocations(item, baseLine, baseCol, exprText); + } + return; + } + + if (node.loc) { + node.loc = this.remapLoc(node.loc, baseLine, baseCol); + } + + // Recurse into known AST fields + for (const key of Object.keys(node)) { + if (key === 'loc') continue; + const val = node[key]; + if (val && typeof val === 'object') { + this.adjustLocations(val, baseLine, baseCol, exprText); + } + } + } + + remapLoc(peggyLoc, baseLine, baseCol) { + const startLine = baseLine + peggyLoc.start.line - 1; + const startCol = + peggyLoc.start.line === 1 ? baseCol + peggyLoc.start.column - 1 : peggyLoc.start.column - 1; + const endLine = baseLine + peggyLoc.end.line - 1; + const endCol = + peggyLoc.end.line === 1 ? baseCol + peggyLoc.end.column - 1 : peggyLoc.end.column - 1; + + return { + source: this.srcName, + start: { line: startLine, column: startCol }, + end: { line: endLine, column: endCol }, + }; + } + + handleMustache(openRaw, outerStart) { + const exprStartLine = this.t.line; + const exprStartCol = this.t.column; + + const exprText = this.extractExpressionText(false); + const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); + + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + + const { expr, params, hash } = parsed; + + return this.prepareMustache( + expr, + params, + hash, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + handleUnescapedMustache(openRaw, outerStart) { + const exprStartLine = this.t.line; + const exprStartCol = this.t.column; + + const exprText = this.extractExpressionText(true); + const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); + + const closeRaw = this.consumeCloseUnescaped(); + const end = this.t.loc(); + + const { expr, params, hash } = parsed; + + return this.prepareMustache( + expr, + params, + hash, + openRaw, + this.stripFlags(openRaw, closeRaw), + outerStart, + end + ); + } + + prepareMustache(path, params, hash, open, strip, startLoc, endLoc) { + if (/\*/.test(open)) { + this.error( + 'Handlebars decorators are not supported in Glimmer', + this.locInfo(startLoc, endLoc) + ); + } + + let escapeFlag = open.charAt(3) || open.charAt(2); + let escaped = escapeFlag !== '{' && escapeFlag !== '&'; + + return { + type: 'MustacheStatement', + path, + params, + hash, + escaped, + strip, + loc: this.locInfo(startLoc, endLoc), + }; + } + + handlePartial(openRaw, outerStart) { + const exprStartLine = this.t.line; + const exprStartCol = this.t.column; + + const exprText = this.extractExpressionText(false); + const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); + + const closeRaw = this.consumeClose(); + const end = this.t.loc(); + + return { + type: 'PartialStatement', + name: parsed.expr, + params: parsed.params, + hash: parsed.hash, + indent: '', + strip: this.stripFlags(openRaw, closeRaw), + loc: this.locInfo(outerStart, end), + }; + } + + handlePartialBlock(openRaw, outerStart) { + this.error( + 'Handlebars partial blocks are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); + } + + handleBlock(openRaw, outerStart) { + if (/\*/.test(openRaw)) { + this.error( + 'Handlebars decorator blocks are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); + } + + const exprStartLine = this.t.line; + const exprStartCol = this.t.column; + + const exprText = this.extractExpressionText(false); + const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); + + const closeRaw = this.consumeClose(); + + const openBlock = { + open: openRaw, + path: parsed.expr, + params: parsed.params, + hash: parsed.hash, + blockParams: parsed.blockParams, + strip: this.stripFlags(openRaw, closeRaw), + }; + + const program = this.parseProgramBody(); + + let inverseAndProgram = undefined; + + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + + if (peeked === 'INVERSE') { + inverseAndProgram = this.parseInverseAndProgram(); + } else if (peeked === 'OPEN_INVERSE_CHAIN') { + inverseAndProgram = this.parseInverseChain(); + } + } + + const closeBlock = this.parseCloseBlock(); + const end = this.t.loc(); + + return this.prepareBlock( + openBlock, + program, + inverseAndProgram, + closeBlock, + false, + outerStart, + end + ); + } + + prepareBlock(openBlock, program, inverseAndProgram, close, inverted, startLoc, endLoc) { + if (close && close.path) { + this.validateClose(openBlock, close); + } + + program.blockParams = openBlock.blockParams; + + let inverse, inverseStrip; + + if (inverseAndProgram) { + if (inverseAndProgram.chain) { + inverseAndProgram.program.body[0].closeStrip = close.strip; + } + + inverseStrip = inverseAndProgram.strip; + inverse = inverseAndProgram.program; + } + + if (inverted) { + inverted = inverse; + inverse = program; + program = inverted; + } + + return { + type: 'BlockStatement', + path: openBlock.path, + params: openBlock.params, + hash: openBlock.hash, + program, + inverse, + openStrip: openBlock.strip, + inverseStrip, + closeStrip: close && close.strip, + loc: this.locInfo(startLoc, endLoc), + }; + } + + validateClose(openBlock, close) { + let closeName = close.path ? close.path.original : close; + if (openBlock.path.original !== closeName) { + this.error(openBlock.path.original + " doesn't match " + closeName, openBlock.path.loc); + } + } + + parseProgramBody() { + const statements = []; + + while (!this.t.eof()) { + if (this.t.startsWith('{{') && !this.isEscapedMustache()) { + const peeked = this.peekMustacheType(); + + if ( + peeked === 'OPEN_ENDBLOCK' || + peeked === 'INVERSE' || + peeked === 'OPEN_INVERSE_CHAIN' || + peeked === 'OPEN_INVERSE' + ) { + break; + } + + const stmt = this.parseMustacheOrBlock(); + if (stmt) statements.push(stmt); + } else { + const content = this.parseContent(); + if (content) statements.push(content); + } + } + + return this.prepareProgram(statements); + } + + parseInverseAndProgram() { + const openResult = this.consumeOpen(); + const raw = openResult.raw; + const strip = { + open: raw.charAt(2) === '~', + close: raw.charAt(raw.length - 3) === '~', + }; + + const program = this.parseProgramBody(); + + return { strip, program }; + } + + parseInverseChain() { + const outerStart = this.t.loc(); + const openResult = this.consumeOpen(); + const openRaw = openResult.raw; + + if (openResult.type === 'OPEN_INVERSE_CHAIN' || openResult.type === 'OPEN_INVERSE') { + const exprStartLine = this.t.line; + const exprStartCol = this.t.column; + + const exprText = this.extractExpressionText(false); + const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); + + const closeRaw = this.consumeClose(); + const openInverseChain = { + path: parsed.expr, + params: parsed.params, + hash: parsed.hash, + blockParams: parsed.blockParams, + strip: this.stripFlags(openRaw, closeRaw), + }; + + const program = this.parseProgramBody(); + + let inverseChain = undefined; + if (this.t.startsWith('{{')) { + const peeked = this.peekMustacheType(); + if (peeked === 'OPEN_INVERSE_CHAIN') { + inverseChain = this.parseInverseChain(); + } else if (peeked === 'INVERSE') { + inverseChain = this.parseInverseAndProgram(); + } + } + + const end = this.t.loc(); + + const inverse = this.prepareBlock( + openInverseChain, + program, + inverseChain, + inverseChain, + false, + outerStart, + end + ); + const wrappedProgram = this.prepareProgram([inverse], program.loc); + wrappedProgram.chained = true; + + return { strip: openInverseChain.strip, program: wrappedProgram, chain: true }; + } + + this.error('Unexpected inverse chain type'); + } + + parseCloseBlock() { + if (!this.t.startsWith('{{')) { + return null; + } + + const openResult = this.consumeOpen(); + + if (openResult.type !== 'OPEN_ENDBLOCK') { + this.error('Expected close block, got ' + openResult.type); + } + + // For close block, we parse just the path using Peggy + const exprStartLine = this.t.line; + const exprStartCol = this.t.column; + + const exprText = this.extractExpressionText(false); + const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); + + const closeRaw = this.consumeClose(); + + return { + path: parsed.expr, + strip: this.stripFlags(openResult.raw, closeRaw), + }; + } + + peekMustacheType() { + if (!this.t.startsWith('{{')) return null; + + const saved = this.t.clone(); + const openResult = this.consumeOpen(); + const type = openResult ? openResult.type : null; + + this.t = saved; + return type; + } + + prepareProgram(statements, loc) { + if (!loc && statements.length) { + const firstLoc = statements[0].loc; + const lastLoc = statements[statements.length - 1].loc; + if (firstLoc && lastLoc) { + loc = { + source: firstLoc.source, + start: { + line: firstLoc.start.line, + column: firstLoc.start.column, + }, + end: { + line: lastLoc.end.line, + column: lastLoc.end.column, + }, + }; + } + } + + return { + type: 'Program', + body: statements, + strip: {}, + loc: loc, + }; + } + + // ============================================================================ + // Helpers + // ============================================================================ + + skipWS() { + while (!this.t.eof() && isWhitespace(this.t.peek())) { + this.t.advance(); + } + } + + isClose(unescaped) { + if (unescaped) { + return this.isCloseUnescaped(); + } + if (this.t.peek() === '~' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { + return true; + } + return this.t.peek() === '}' && this.t.peek(1) === '}'; + } + + isCloseUnescaped() { + if (this.t.peek() === '}') { + if (this.t.peek(1) === '~' && this.t.peek(2) === '}' && this.t.peek(3) === '}') { + return true; + } + return this.t.peek(1) === '}' && this.t.peek(2) === '}'; + } + if ( + this.t.peek() === '~' && + this.t.peek(1) === '}' && + this.t.peek(2) === '}' && + this.t.peek(3) === '}' + ) { + return true; + } + return false; + } + + consumeClose() { + const startPos = this.t.pos; + if (this.t.peek() === '~') { + this.t.advance(); + } + if (this.t.peek() === '}' && this.t.peek(1) === '}') { + this.t.advance(2); + return this.input.slice(startPos, this.t.pos); + } + this.t.advance(); + this.error( + `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'` + ); + } + + consumeCloseUnescaped() { + const startPos = this.t.pos; + if (this.t.peek() === '}') { + this.t.advance(); + if (this.t.peek() === '~') { + this.t.advance(); + } + if (this.t.peek() === '}' && this.t.peek(1) === '}') { + this.t.advance(2); + return this.input.slice(startPos, this.t.pos); + } + } + if (this.input[startPos] === '~') { + this.t.advance(); + if (this.t.peek() === '}' && this.t.peek(1) === '}' && this.t.peek(2) === '}') { + this.t.advance(3); + return this.input.slice(startPos, this.t.pos); + } + } + this.error('Expected closing }}}'); + } + + isEscapedMustache() { + if (this.t.peek() !== '\\') return false; + let count = 0; + while (this.t.peek(count) === '\\') count++; + return count % 2 === 1 && this.t.peek(count) === '{' && this.t.peek(count + 1) === '{'; + } +} diff --git a/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy b/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy new file mode 100644 index 00000000000..f11edbaab9a --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy @@ -0,0 +1,322 @@ +// Peggy grammar for Handlebars expression parsing. +// +// This grammar parses content INSIDE {{ ... }} delimiters — paths, literals, +// sub-expressions, hash pairs, and block params. The outer template scanning +// (content, mustache boundaries, backslash escaping, block nesting) is handled +// by hbs-scanner.js. +// +// Generate with: +// npx peggy --format es hbs.peggy -o parser.js + +{{ +// Helper: build a PathExpression AST node from parsed segments. +function buildPath(data, segments, loc) { + let original = data ? '@' : ''; + let tail = []; + let isThis = false; + + for (let i = 0; i < segments.length; i++) { + let seg = segments[i]; + let part = seg.part; + let isLiteral = seg.original !== part; + let separator = seg.separator || ''; + let partPrefix = separator === '.#' ? '#' : ''; + + original += separator + seg.original; + + if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { + if (tail.length > 0) { + error('Invalid path: ' + original); + } else if (part === 'this') { + isThis = true; + } + } else { + tail.push(partPrefix + part); + } + } + + let head = tail.shift(); + + return { + type: 'PathExpression', + this: isThis, + data: !!data, + head: head, + tail: tail, + parts: head !== undefined ? [head, ...tail] : tail, + original: original, + loc: loc, + }; +} + +// Strip brackets from [foo] segments. +function idFromBracket(token) { + if (/^\[.*\]$/.test(token)) { + return token.substring(1, token.length - 1); + } + return token; +} +}} + +// ============================================================================ +// Top-level rules +// ============================================================================ + +// An expression with optional params, hash, and block params. +// This is what the scanner calls for the content inside {{ ... }}. +ExpressionWithParamsAndHash + = _ expr:Expression params:Params hash:HashOpt blockParams:BlockParamsOpt _ { + return { expr, params, hash, blockParams }; + } + +// Parse just params + hash (for when the scanner has already parsed the head). +// Not used directly by the scanner, but useful for sub-expression internals. +Params + = ps:(_ !HashPairLookahead !BlockParamsLookahead p:Expression { return p; })* { return ps; } + +HashOpt + = _ h:Hash { return h; } + / _ { return undefined; } + +BlockParamsOpt + = _ bp:BlockParams { return bp; } + / _ { return undefined; } + +// A single expression: sub-expression, literal, data path, or regular path. +Expression + = SubExpression + / StringLiteral + / NumberLiteral + / BooleanLiteral + / UndefinedLiteral + / NullLiteral + / DataName + / Path + +// ============================================================================ +// Sub-expression: (helper param1 param2 key=value) +// ============================================================================ + +SubExpression + = "(" _ expr:Expression params:SexprParams hash:HashOpt _ ")" { + return { + type: 'SubExpression', + path: expr, + params: params, + hash: hash, + loc: location(), + }; + } + +SexprParams + = ps:(_ !HashPairLookahead p:Expression { return p; })* { return ps; } + +// ============================================================================ +// Hash: key=value key2=value2 +// ============================================================================ + +Hash + = &HashPairLookahead pairs:HashPairList { + return { + type: 'Hash', + pairs: pairs, + loc: location(), + }; + } + +HashPairList + = first:HashPair rest:(_ hp:HashPair { return hp; })* { + return [first, ...rest]; + } + +HashPair + = key:HashKey _ "=" _ value:Expression { + return { + type: 'HashPair', + key: idFromBracket(key), + value: value, + loc: location(), + }; + } + +HashKey + = BracketSegment + / IDNonDigitStart + +// Lookahead to detect hash start: ID followed by optional whitespace and = +HashPairLookahead + = (BracketSegment / IDNonDigitStart) _ "=" + +// ============================================================================ +// Block params: as |foo bar| +// ============================================================================ + +BlockParamsLookahead + = "as" __ "|" + +BlockParams + = "as" __ "|" names:BlockParamNames "|" { + return names; + } + +BlockParamNames + = _ first:IDNonDigitStart rest:(_ id:IDNonDigitStart { return id; })* _ { return [first, ...rest]; } + +// ============================================================================ +// Path expressions +// ============================================================================ + +DataName + = "@" segments:PathSegments { + return buildPath(true, segments, location()); + } + +Path + = segments:PathSegments { + return buildPath(false, segments, location()); + } + +PathSegments + = first:FirstPathSegment rest:RestPathSegment* { + return [first, ...rest]; + } + +RestPathSegment + = ".#" seg:PathSegmentAfterSep { return { ...seg, separator: '.#' }; } + / "." seg:PathSegmentAfterSep { return { ...seg, separator: '.' }; } + / "/" seg:PathSegmentAfterSep { return { ...seg, separator: '/' }; } + +FirstPathSegment + = seg:BracketSegment { return { part: idFromBracket(seg), original: seg }; } + / ".." { return { part: '..', original: '..' }; } + / "." !IDContinueChar { return { part: '.', original: '.' }; } + / "this" !IDContinueChar { return { part: 'this', original: 'this' }; } + / id:IDNonDigitStart { return { part: id, original: id }; } + +PathSegmentAfterSep + = seg:BracketSegment { return { part: idFromBracket(seg), original: seg }; } + / ".." { return { part: '..', original: '..' }; } + / "." !IDContinueChar { return { part: '.', original: '.' }; } + / id:IDAllowDigitStart { return { part: id, original: id }; } + +// ============================================================================ +// Literals +// ============================================================================ + +StringLiteral + = '"' chars:DoubleStringChar* '"' { + let value = chars.join(''); + return { + type: 'StringLiteral', + value: value, + original: value, + loc: location(), + }; + } + / "'" chars:SingleStringChar* "'" { + let value = chars.join(''); + return { + type: 'StringLiteral', + value: value, + original: value, + loc: location(), + }; + } + +DoubleStringChar + = '\\"' { return '"'; } + / [^"] + +SingleStringChar + = "\\'" { return "'"; } + / [^'] + +NumberLiteral + = num:$("-"? [0-9]+ ("." [0-9]+)?) &LiteralLookahead { + let value = Number(num); + return { + type: 'NumberLiteral', + value: value, + original: value, + loc: location(), + }; + } + +BooleanLiteral + = "true" &LiteralLookahead { + return { + type: 'BooleanLiteral', + value: true, + original: true, + loc: location(), + }; + } + / "false" &LiteralLookahead { + return { + type: 'BooleanLiteral', + value: false, + original: false, + loc: location(), + }; + } + +UndefinedLiteral + = "undefined" &LiteralLookahead { + return { + type: 'UndefinedLiteral', + value: undefined, + original: undefined, + loc: location(), + }; + } + +NullLiteral + = "null" &LiteralLookahead { + return { + type: 'NullLiteral', + value: null, + original: null, + loc: location(), + }; + } + +// Lookahead for literal boundaries: must be followed by whitespace, close, etc. +LiteralLookahead + = ![a-zA-Z0-9_$\-.:/?] + +// ============================================================================ +// Identifiers +// ============================================================================ + +// An ID that must not start with a digit (first path segment). +IDNonDigitStart + = $([a-zA-Z_$\-:?] IDContinueChar*) + +// An ID that can start with a digit (after a separator). +IDAllowDigitStart + = $(IDContinueChar+) + +// Characters valid inside an ID. +// The original Handlebars lexer: [^\s!"#%-,\.\/;->@\[-\^`\{-~]+ +// Allowed: $, -, 0-9, :, ?, A-Z, _, a-z, and chars > 0x7e +IDContinueChar + = [a-zA-Z0-9_$\-:?] + +// Bracket-escaped segment: [anything except unescaped ]] +BracketSegment + = "[" chars:BracketChar* "]" { return "[" + chars.join("") + "]"; } + +BracketChar + = "\\]" { return "]"; } + / "\\\\" { return "\\"; } + / [^\]] + +// ============================================================================ +// Whitespace +// ============================================================================ + +// Required whitespace +__ = [ \t\n\r]+ + +// Optional whitespace +_ = [ \t\n\r]* diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parse.js b/packages/@glimmer/syntax/lib/hbs-parser/parse.js index 8aa80f73b17..90b82a8b97e 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parse.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parse.js @@ -1,4 +1,4 @@ -import { chevrotainParse } from './chevrotain-parser.js'; +import { peggyParseTemplate } from './hbs-scanner.js'; import WhitespaceControl from './whitespace-control.js'; export function parseWithoutProcessing(input, options) { @@ -7,7 +7,7 @@ export function parseWithoutProcessing(input, options) { return input; } - return chevrotainParse(input, options); + return peggyParseTemplate(input, options); } export function parse(input, options) { diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parser.js b/packages/@glimmer/syntax/lib/hbs-parser/parser.js new file mode 100644 index 00000000000..7d67000d93b --- /dev/null +++ b/packages/@glimmer/syntax/lib/hbs-parser/parser.js @@ -0,0 +1,2170 @@ +// @generated by Peggy 5.1.0. +// +// https://peggyjs.org/ + + + +// Helper: build a PathExpression AST node from parsed segments. +function buildPath(data, segments, loc) { + let original = data ? '@' : ''; + let tail = []; + let isThis = false; + + for (let i = 0; i < segments.length; i++) { + let seg = segments[i]; + let part = seg.part; + let isLiteral = seg.original !== part; + let separator = seg.separator || ''; + let partPrefix = separator === '.#' ? '#' : ''; + + original += separator + seg.original; + + if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { + if (tail.length > 0) { + error('Invalid path: ' + original); + } else if (part === 'this') { + isThis = true; + } + } else { + tail.push(partPrefix + part); + } + } + + let head = tail.shift(); + + return { + type: 'PathExpression', + this: isThis, + data: !!data, + head: head, + tail: tail, + parts: head !== undefined ? [head, ...tail] : tail, + original: original, + loc: loc, + }; +} + +// Strip brackets from [foo] segments. +function idFromBracket(token) { + if (/^\[.*\]$/.test(token)) { + return token.substring(1, token.length - 1); + } + return token; +} + +class peg$SyntaxError extends SyntaxError { + constructor(message, expected, found, location) { + super(message); + this.expected = expected; + this.found = found; + this.location = location; + this.name = "SyntaxError"; + } + + format(sources) { + let str = "Error: " + this.message; + if (this.location) { + let src = null; + const st = sources.find(s => s.source === this.location.source); + if (st) { + src = st.text.split(/\r\n|\n|\r/g); + } + const s = this.location.start; + const offset_s = (this.location.source && (typeof this.location.source.offset === "function")) + ? this.location.source.offset(s) + : s; + const loc = this.location.source + ":" + offset_s.line + ":" + offset_s.column; + if (src) { + const e = this.location.end; + const filler = "".padEnd(offset_s.line.toString().length, " "); + const line = src[s.line - 1]; + const last = s.line === e.line ? e.column : line.length + 1; + const hatLen = (last - s.column) || 1; + str += "\n --> " + loc + "\n" + + filler + " |\n" + + offset_s.line + " | " + line + "\n" + + filler + " | " + "".padEnd(s.column - 1, " ") + + "".padEnd(hatLen, "^"); + } else { + str += "\n at " + loc; + } + } + return str; + } + + static buildMessage(expected, found) { + function hex(ch) { + return ch.codePointAt(0).toString(16).toUpperCase(); + } + + const nonPrintable = Object.prototype.hasOwnProperty.call(RegExp.prototype, "unicode") + ? new RegExp("[\\p{C}\\p{Mn}\\p{Mc}]", "gu") + : null; + function unicodeEscape(s) { + if (nonPrintable) { + return s.replace(nonPrintable, ch => "\\u{" + hex(ch) + "}"); + } + return s; + } + + function literalEscape(s) { + return unicodeEscape(s + .replace(/\\/g, "\\\\") + .replace(/"/g, "\\\"") + .replace(/\0/g, "\\0") + .replace(/\t/g, "\\t") + .replace(/\n/g, "\\n") + .replace(/\r/g, "\\r") + .replace(/[\x00-\x0F]/g, ch => "\\x0" + hex(ch)) + .replace(/[\x10-\x1F\x7F-\x9F]/g, ch => "\\x" + hex(ch))); + } + + function classEscape(s) { + return unicodeEscape(s + .replace(/\\/g, "\\\\") + .replace(/\]/g, "\\]") + .replace(/\^/g, "\\^") + .replace(/-/g, "\\-") + .replace(/\0/g, "\\0") + .replace(/\t/g, "\\t") + .replace(/\n/g, "\\n") + .replace(/\r/g, "\\r") + .replace(/[\x00-\x0F]/g, ch => "\\x0" + hex(ch)) + .replace(/[\x10-\x1F\x7F-\x9F]/g, ch => "\\x" + hex(ch))); + } + + const DESCRIBE_EXPECTATION_FNS = { + literal(expectation) { + return "\"" + literalEscape(expectation.text) + "\""; + }, + + class(expectation) { + const escapedParts = expectation.parts.map( + part => (Array.isArray(part) + ? classEscape(part[0]) + "-" + classEscape(part[1]) + : classEscape(part)) + ); + + return "[" + (expectation.inverted ? "^" : "") + escapedParts.join("") + "]" + (expectation.unicode ? "u" : ""); + }, + + any() { + return "any character"; + }, + + end() { + return "end of input"; + }, + + other(expectation) { + return expectation.description; + }, + }; + + function describeExpectation(expectation) { + return DESCRIBE_EXPECTATION_FNS[expectation.type](expectation); + } + + function describeExpected(expected) { + const descriptions = expected.map(describeExpectation); + descriptions.sort(); + + if (descriptions.length > 0) { + let j = 1; + for (let i = 1; i < descriptions.length; i++) { + if (descriptions[i - 1] !== descriptions[i]) { + descriptions[j] = descriptions[i]; + j++; + } + } + descriptions.length = j; + } + + switch (descriptions.length) { + case 1: + return descriptions[0]; + + case 2: + return descriptions[0] + " or " + descriptions[1]; + + default: + return descriptions.slice(0, -1).join(", ") + + ", or " + + descriptions[descriptions.length - 1]; + } + } + + function describeFound(found) { + return found ? "\"" + literalEscape(found) + "\"" : "end of input"; + } + + return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found."; + } +} + +function peg$parse(input, options) { + options = options !== undefined ? options : {}; + + const peg$FAILED = {}; + const peg$source = options.grammarSource; + + const peg$startRuleFunctions = { + ExpressionWithParamsAndHash: peg$parseExpressionWithParamsAndHash, + }; + let peg$startRuleFunction = peg$parseExpressionWithParamsAndHash; + + const peg$c0 = "("; + const peg$c1 = ")"; + const peg$c2 = "="; + const peg$c3 = "as"; + const peg$c4 = "|"; + const peg$c5 = "@"; + const peg$c6 = ".#"; + const peg$c7 = "."; + const peg$c8 = "/"; + const peg$c9 = ".."; + const peg$c10 = "this"; + const peg$c11 = "\""; + const peg$c12 = "'"; + const peg$c13 = "\\\""; + const peg$c14 = "\\'"; + const peg$c15 = "-"; + const peg$c16 = "true"; + const peg$c17 = "false"; + const peg$c18 = "undefined"; + const peg$c19 = "null"; + const peg$c20 = "["; + const peg$c21 = "]"; + const peg$c22 = "\\]"; + const peg$c23 = "\\\\"; + + const peg$r0 = /^[^"]/; + const peg$r1 = /^[^']/; + const peg$r2 = /^[0-9]/; + const peg$r3 = /^[a-zA-Z0-9_$\-.:\/?]/; + const peg$r4 = /^[a-zA-Z_$\-:?]/; + const peg$r5 = /^[a-zA-Z0-9_$\-:?]/; + const peg$r6 = /^[^\]]/; + const peg$r7 = /^[ \t\n\r]/; + + const peg$e0 = peg$literalExpectation("(", false); + const peg$e1 = peg$literalExpectation(")", false); + const peg$e2 = peg$literalExpectation("=", false); + const peg$e3 = peg$literalExpectation("as", false); + const peg$e4 = peg$literalExpectation("|", false); + const peg$e5 = peg$literalExpectation("@", false); + const peg$e6 = peg$literalExpectation(".#", false); + const peg$e7 = peg$literalExpectation(".", false); + const peg$e8 = peg$literalExpectation("/", false); + const peg$e9 = peg$literalExpectation("..", false); + const peg$e10 = peg$literalExpectation("this", false); + const peg$e11 = peg$literalExpectation("\"", false); + const peg$e12 = peg$literalExpectation("'", false); + const peg$e13 = peg$literalExpectation("\\\"", false); + const peg$e14 = peg$classExpectation(["\""], true, false, false); + const peg$e15 = peg$literalExpectation("\\'", false); + const peg$e16 = peg$classExpectation(["'"], true, false, false); + const peg$e17 = peg$literalExpectation("-", false); + const peg$e18 = peg$classExpectation([["0", "9"]], false, false, false); + const peg$e19 = peg$literalExpectation("true", false); + const peg$e20 = peg$literalExpectation("false", false); + const peg$e21 = peg$literalExpectation("undefined", false); + const peg$e22 = peg$literalExpectation("null", false); + const peg$e23 = peg$classExpectation([["a", "z"], ["A", "Z"], ["0", "9"], "_", "$", "-", ".", ":", "/", "?"], false, false, false); + const peg$e24 = peg$classExpectation([["a", "z"], ["A", "Z"], "_", "$", "-", ":", "?"], false, false, false); + const peg$e25 = peg$classExpectation([["a", "z"], ["A", "Z"], ["0", "9"], "_", "$", "-", ":", "?"], false, false, false); + const peg$e26 = peg$literalExpectation("[", false); + const peg$e27 = peg$literalExpectation("]", false); + const peg$e28 = peg$literalExpectation("\\]", false); + const peg$e29 = peg$literalExpectation("\\\\", false); + const peg$e30 = peg$classExpectation(["]"], true, false, false); + const peg$e31 = peg$classExpectation([" ", "\t", "\n", "\r"], false, false, false); + + function peg$f0(expr, params, hash, blockParams) { + return { expr, params, hash, blockParams }; + } + function peg$f1(p) { return p; } + function peg$f2(ps) { return ps; } + function peg$f3(h) { return h; } + function peg$f4() { return undefined; } + function peg$f5(bp) { return bp; } + function peg$f6() { return undefined; } + function peg$f7(expr, params, hash) { + return { + type: 'SubExpression', + path: expr, + params: params, + hash: hash, + loc: location(), + }; + } + function peg$f8(p) { return p; } + function peg$f9(ps) { return ps; } + function peg$f10(pairs) { + return { + type: 'Hash', + pairs: pairs, + loc: location(), + }; + } + function peg$f11(first, hp) { return hp; } + function peg$f12(first, rest) { + return [first, ...rest]; + } + function peg$f13(key, value) { + return { + type: 'HashPair', + key: idFromBracket(key), + value: value, + loc: location(), + }; + } + function peg$f14(names) { + return names; + } + function peg$f15(first, id) { return id; } + function peg$f16(first, rest) { return [first, ...rest]; } + function peg$f17(segments) { + return buildPath(true, segments, location()); + } + function peg$f18(segments) { + return buildPath(false, segments, location()); + } + function peg$f19(first, rest) { + return [first, ...rest]; + } + function peg$f20(seg) { return { ...seg, separator: '.#' }; } + function peg$f21(seg) { return { ...seg, separator: '.' }; } + function peg$f22(seg) { return { ...seg, separator: '/' }; } + function peg$f23(seg) { return { part: idFromBracket(seg), original: seg }; } + function peg$f24() { return { part: '..', original: '..' }; } + function peg$f25() { return { part: '.', original: '.' }; } + function peg$f26() { return { part: 'this', original: 'this' }; } + function peg$f27(id) { return { part: id, original: id }; } + function peg$f28(seg) { return { part: idFromBracket(seg), original: seg }; } + function peg$f29() { return { part: '..', original: '..' }; } + function peg$f30() { return { part: '.', original: '.' }; } + function peg$f31(id) { return { part: id, original: id }; } + function peg$f32(chars) { + let value = chars.join(''); + return { + type: 'StringLiteral', + value: value, + original: value, + loc: location(), + }; + } + function peg$f33(chars) { + let value = chars.join(''); + return { + type: 'StringLiteral', + value: value, + original: value, + loc: location(), + }; + } + function peg$f34() { return '"'; } + function peg$f35() { return "'"; } + function peg$f36(num) { + let value = Number(num); + return { + type: 'NumberLiteral', + value: value, + original: value, + loc: location(), + }; + } + function peg$f37() { + return { + type: 'BooleanLiteral', + value: true, + original: true, + loc: location(), + }; + } + function peg$f38() { + return { + type: 'BooleanLiteral', + value: false, + original: false, + loc: location(), + }; + } + function peg$f39() { + return { + type: 'UndefinedLiteral', + value: undefined, + original: undefined, + loc: location(), + }; + } + function peg$f40() { + return { + type: 'NullLiteral', + value: null, + original: null, + loc: location(), + }; + } + function peg$f41(chars) { return "[" + chars.join("") + "]"; } + function peg$f42() { return "]"; } + function peg$f43() { return "\\"; } + let peg$currPos = options.peg$currPos | 0; + let peg$savedPos = peg$currPos; + const peg$posDetailsCache = [{ line: 1, column: 1 }]; + let peg$maxFailPos = peg$currPos; + let peg$maxFailExpected = options.peg$maxFailExpected || []; + let peg$silentFails = options.peg$silentFails | 0; + + let peg$result; + + if (options.startRule) { + if (!(options.startRule in peg$startRuleFunctions)) { + throw new Error("Can't start parsing from rule \"" + options.startRule + "\"."); + } + + peg$startRuleFunction = peg$startRuleFunctions[options.startRule]; + } + + function text() { + return input.substring(peg$savedPos, peg$currPos); + } + + function offset() { + return peg$savedPos; + } + + function range() { + return { + source: peg$source, + start: peg$savedPos, + end: peg$currPos, + }; + } + + function location() { + return peg$computeLocation(peg$savedPos, peg$currPos); + } + + function expected(description, location) { + location = location !== undefined + ? location + : peg$computeLocation(peg$savedPos, peg$currPos); + + throw peg$buildStructuredError( + [peg$otherExpectation(description)], + input.substring(peg$savedPos, peg$currPos), + location + ); + } + + function error(message, location) { + location = location !== undefined + ? location + : peg$computeLocation(peg$savedPos, peg$currPos); + + throw peg$buildSimpleError(message, location); + } + + function peg$getUnicode(pos = peg$currPos) { + const cp = input.codePointAt(pos); + if (cp === undefined) { + return ""; + } + return String.fromCodePoint(cp); + } + + function peg$literalExpectation(text, ignoreCase) { + return { type: "literal", text, ignoreCase }; + } + + function peg$classExpectation(parts, inverted, ignoreCase, unicode) { + return { type: "class", parts, inverted, ignoreCase, unicode }; + } + + function peg$anyExpectation() { + return { type: "any" }; + } + + function peg$endExpectation() { + return { type: "end" }; + } + + function peg$otherExpectation(description) { + return { type: "other", description }; + } + + function peg$computePosDetails(pos) { + let details = peg$posDetailsCache[pos]; + let p; + + if (details) { + return details; + } else { + if (pos >= peg$posDetailsCache.length) { + p = peg$posDetailsCache.length - 1; + } else { + p = pos; + while (!peg$posDetailsCache[--p]) {} + } + + details = peg$posDetailsCache[p]; + details = { + line: details.line, + column: details.column, + }; + + while (p < pos) { + if (input.charCodeAt(p) === 10) { + details.line++; + details.column = 1; + } else { + details.column++; + } + + p++; + } + + peg$posDetailsCache[pos] = details; + + return details; + } + } + + function peg$computeLocation(startPos, endPos, offset) { + const startPosDetails = peg$computePosDetails(startPos); + const endPosDetails = peg$computePosDetails(endPos); + + const res = { + source: peg$source, + start: { + offset: startPos, + line: startPosDetails.line, + column: startPosDetails.column, + }, + end: { + offset: endPos, + line: endPosDetails.line, + column: endPosDetails.column, + }, + }; + if (offset && peg$source && (typeof peg$source.offset === "function")) { + res.start = peg$source.offset(res.start); + res.end = peg$source.offset(res.end); + } + return res; + } + + function peg$fail(expected) { + if (peg$currPos < peg$maxFailPos) { return; } + + if (peg$currPos > peg$maxFailPos) { + peg$maxFailPos = peg$currPos; + peg$maxFailExpected = []; + } + + peg$maxFailExpected.push(expected); + } + + function peg$buildSimpleError(message, location) { + return new peg$SyntaxError(message, null, null, location); + } + + function peg$buildStructuredError(expected, found, location) { + return new peg$SyntaxError( + peg$SyntaxError.buildMessage(expected, found), + expected, + found, + location + ); + } + + function peg$parseExpressionWithParamsAndHash() { + let s0, s1, s2, s3, s4, s5, s6; + + s0 = peg$currPos; + s1 = peg$parse_(); + s2 = peg$parseExpression(); + if (s2 !== peg$FAILED) { + s3 = peg$parseParams(); + s4 = peg$parseHashOpt(); + if (s4 !== peg$FAILED) { + s5 = peg$parseBlockParamsOpt(); + if (s5 !== peg$FAILED) { + s6 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f0(s2, s3, s4, s5); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseParams() { + let s0, s1, s2, s3, s4, s5, s6; + + s0 = peg$currPos; + s1 = []; + s2 = peg$currPos; + s3 = peg$parse_(); + s4 = peg$currPos; + peg$silentFails++; + s5 = peg$parseHashPairLookahead(); + peg$silentFails--; + if (s5 === peg$FAILED) { + s4 = undefined; + } else { + peg$currPos = s4; + s4 = peg$FAILED; + } + if (s4 !== peg$FAILED) { + s5 = peg$currPos; + peg$silentFails++; + s6 = peg$parseBlockParamsLookahead(); + peg$silentFails--; + if (s6 === peg$FAILED) { + s5 = undefined; + } else { + peg$currPos = s5; + s5 = peg$FAILED; + } + if (s5 !== peg$FAILED) { + s6 = peg$parseExpression(); + if (s6 !== peg$FAILED) { + peg$savedPos = s2; + s2 = peg$f1(s6); + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + while (s2 !== peg$FAILED) { + s1.push(s2); + s2 = peg$currPos; + s3 = peg$parse_(); + s4 = peg$currPos; + peg$silentFails++; + s5 = peg$parseHashPairLookahead(); + peg$silentFails--; + if (s5 === peg$FAILED) { + s4 = undefined; + } else { + peg$currPos = s4; + s4 = peg$FAILED; + } + if (s4 !== peg$FAILED) { + s5 = peg$currPos; + peg$silentFails++; + s6 = peg$parseBlockParamsLookahead(); + peg$silentFails--; + if (s6 === peg$FAILED) { + s5 = undefined; + } else { + peg$currPos = s5; + s5 = peg$FAILED; + } + if (s5 !== peg$FAILED) { + s6 = peg$parseExpression(); + if (s6 !== peg$FAILED) { + peg$savedPos = s2; + s2 = peg$f1(s6); + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } + peg$savedPos = s0; + s1 = peg$f2(s1); + s0 = s1; + + return s0; + } + + function peg$parseHashOpt() { + let s0, s1, s2; + + s0 = peg$currPos; + s1 = peg$parse_(); + s2 = peg$parseHash(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f3(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + s1 = peg$parse_(); + peg$savedPos = s0; + s1 = peg$f4(); + s0 = s1; + } + + return s0; + } + + function peg$parseBlockParamsOpt() { + let s0, s1, s2; + + s0 = peg$currPos; + s1 = peg$parse_(); + s2 = peg$parseBlockParams(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f5(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + s1 = peg$parse_(); + peg$savedPos = s0; + s1 = peg$f6(); + s0 = s1; + } + + return s0; + } + + function peg$parseExpression() { + let s0; + + s0 = peg$parseSubExpression(); + if (s0 === peg$FAILED) { + s0 = peg$parseStringLiteral(); + if (s0 === peg$FAILED) { + s0 = peg$parseNumberLiteral(); + if (s0 === peg$FAILED) { + s0 = peg$parseBooleanLiteral(); + if (s0 === peg$FAILED) { + s0 = peg$parseUndefinedLiteral(); + if (s0 === peg$FAILED) { + s0 = peg$parseNullLiteral(); + if (s0 === peg$FAILED) { + s0 = peg$parseDataName(); + if (s0 === peg$FAILED) { + s0 = peg$parsePath(); + } + } + } + } + } + } + } + + return s0; + } + + function peg$parseSubExpression() { + let s0, s1, s2, s3, s4, s5, s6, s7; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 40) { + s1 = peg$c0; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e0); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + s3 = peg$parseExpression(); + if (s3 !== peg$FAILED) { + s4 = peg$parseSexprParams(); + s5 = peg$parseHashOpt(); + if (s5 !== peg$FAILED) { + s6 = peg$parse_(); + if (input.charCodeAt(peg$currPos) === 41) { + s7 = peg$c1; + peg$currPos++; + } else { + s7 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e1); } + } + if (s7 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f7(s3, s4, s5); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseSexprParams() { + let s0, s1, s2, s3, s4, s5; + + s0 = peg$currPos; + s1 = []; + s2 = peg$currPos; + s3 = peg$parse_(); + s4 = peg$currPos; + peg$silentFails++; + s5 = peg$parseHashPairLookahead(); + peg$silentFails--; + if (s5 === peg$FAILED) { + s4 = undefined; + } else { + peg$currPos = s4; + s4 = peg$FAILED; + } + if (s4 !== peg$FAILED) { + s5 = peg$parseExpression(); + if (s5 !== peg$FAILED) { + peg$savedPos = s2; + s2 = peg$f8(s5); + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + while (s2 !== peg$FAILED) { + s1.push(s2); + s2 = peg$currPos; + s3 = peg$parse_(); + s4 = peg$currPos; + peg$silentFails++; + s5 = peg$parseHashPairLookahead(); + peg$silentFails--; + if (s5 === peg$FAILED) { + s4 = undefined; + } else { + peg$currPos = s4; + s4 = peg$FAILED; + } + if (s4 !== peg$FAILED) { + s5 = peg$parseExpression(); + if (s5 !== peg$FAILED) { + peg$savedPos = s2; + s2 = peg$f8(s5); + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + } + peg$savedPos = s0; + s1 = peg$f9(s1); + s0 = s1; + + return s0; + } + + function peg$parseHash() { + let s0, s1, s2; + + s0 = peg$currPos; + s1 = peg$currPos; + peg$silentFails++; + s2 = peg$parseHashPairLookahead(); + peg$silentFails--; + if (s2 !== peg$FAILED) { + peg$currPos = s1; + s1 = undefined; + } else { + s1 = peg$FAILED; + } + if (s1 !== peg$FAILED) { + s2 = peg$parseHashPairList(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f10(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseHashPairList() { + let s0, s1, s2, s3, s4, s5; + + s0 = peg$currPos; + s1 = peg$parseHashPair(); + if (s1 !== peg$FAILED) { + s2 = []; + s3 = peg$currPos; + s4 = peg$parse_(); + s5 = peg$parseHashPair(); + if (s5 !== peg$FAILED) { + peg$savedPos = s3; + s3 = peg$f11(s1, s5); + } else { + peg$currPos = s3; + s3 = peg$FAILED; + } + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = peg$currPos; + s4 = peg$parse_(); + s5 = peg$parseHashPair(); + if (s5 !== peg$FAILED) { + peg$savedPos = s3; + s3 = peg$f11(s1, s5); + } else { + peg$currPos = s3; + s3 = peg$FAILED; + } + } + peg$savedPos = s0; + s0 = peg$f12(s1, s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseHashPair() { + let s0, s1, s2, s3, s4, s5; + + s0 = peg$currPos; + s1 = peg$parseHashKey(); + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + if (input.charCodeAt(peg$currPos) === 61) { + s3 = peg$c2; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e2); } + } + if (s3 !== peg$FAILED) { + s4 = peg$parse_(); + s5 = peg$parseExpression(); + if (s5 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f13(s1, s5); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseHashKey() { + let s0; + + s0 = peg$parseBracketSegment(); + if (s0 === peg$FAILED) { + s0 = peg$parseIDNonDigitStart(); + } + + return s0; + } + + function peg$parseHashPairLookahead() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + s1 = peg$parseBracketSegment(); + if (s1 === peg$FAILED) { + s1 = peg$parseIDNonDigitStart(); + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + if (input.charCodeAt(peg$currPos) === 61) { + s3 = peg$c2; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e2); } + } + if (s3 !== peg$FAILED) { + s1 = [s1, s2, s3]; + s0 = s1; + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseBlockParamsLookahead() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c3) { + s1 = peg$c3; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e3); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse__(); + if (s2 !== peg$FAILED) { + if (input.charCodeAt(peg$currPos) === 124) { + s3 = peg$c4; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e4); } + } + if (s3 !== peg$FAILED) { + s1 = [s1, s2, s3]; + s0 = s1; + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseBlockParams() { + let s0, s1, s2, s3, s4, s5; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c3) { + s1 = peg$c3; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e3); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse__(); + if (s2 !== peg$FAILED) { + if (input.charCodeAt(peg$currPos) === 124) { + s3 = peg$c4; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e4); } + } + if (s3 !== peg$FAILED) { + s4 = peg$parseBlockParamNames(); + if (s4 !== peg$FAILED) { + if (input.charCodeAt(peg$currPos) === 124) { + s5 = peg$c4; + peg$currPos++; + } else { + s5 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e4); } + } + if (s5 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f14(s4); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseBlockParamNames() { + let s0, s1, s2, s3, s4, s5, s6; + + s0 = peg$currPos; + s1 = peg$parse_(); + s2 = peg$parseIDNonDigitStart(); + if (s2 !== peg$FAILED) { + s3 = []; + s4 = peg$currPos; + s5 = peg$parse_(); + s6 = peg$parseIDNonDigitStart(); + if (s6 !== peg$FAILED) { + peg$savedPos = s4; + s4 = peg$f15(s2, s6); + } else { + peg$currPos = s4; + s4 = peg$FAILED; + } + while (s4 !== peg$FAILED) { + s3.push(s4); + s4 = peg$currPos; + s5 = peg$parse_(); + s6 = peg$parseIDNonDigitStart(); + if (s6 !== peg$FAILED) { + peg$savedPos = s4; + s4 = peg$f15(s2, s6); + } else { + peg$currPos = s4; + s4 = peg$FAILED; + } + } + s4 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f16(s2, s3); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseDataName() { + let s0, s1, s2; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 64) { + s1 = peg$c5; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e5); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parsePathSegments(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f17(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parsePath() { + let s0, s1; + + s0 = peg$currPos; + s1 = peg$parsePathSegments(); + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f18(s1); + } + s0 = s1; + + return s0; + } + + function peg$parsePathSegments() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + s1 = peg$parseFirstPathSegment(); + if (s1 !== peg$FAILED) { + s2 = []; + s3 = peg$parseRestPathSegment(); + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = peg$parseRestPathSegment(); + } + peg$savedPos = s0; + s0 = peg$f19(s1, s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseRestPathSegment() { + let s0, s1, s2; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c6) { + s1 = peg$c6; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e6); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parsePathSegmentAfterSep(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f20(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 46) { + s1 = peg$c7; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e7); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parsePathSegmentAfterSep(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f21(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 47) { + s1 = peg$c8; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e8); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parsePathSegmentAfterSep(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f22(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } + } + + return s0; + } + + function peg$parseFirstPathSegment() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + s1 = peg$parseBracketSegment(); + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f23(s1); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c9) { + s1 = peg$c9; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e9); } + } + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f24(); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 46) { + s1 = peg$c7; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e7); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseIDContinueChar(); + peg$silentFails--; + if (s3 === peg$FAILED) { + s2 = undefined; + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f25(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.substr(peg$currPos, 4) === peg$c10) { + s1 = peg$c10; + peg$currPos += 4; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e10); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseIDContinueChar(); + peg$silentFails--; + if (s3 === peg$FAILED) { + s2 = undefined; + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f26(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + s1 = peg$parseIDNonDigitStart(); + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f27(s1); + } + s0 = s1; + } + } + } + } + + return s0; + } + + function peg$parsePathSegmentAfterSep() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + s1 = peg$parseBracketSegment(); + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f28(s1); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c9) { + s1 = peg$c9; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e9); } + } + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f29(); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 46) { + s1 = peg$c7; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e7); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseIDContinueChar(); + peg$silentFails--; + if (s3 === peg$FAILED) { + s2 = undefined; + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f30(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + s1 = peg$parseIDAllowDigitStart(); + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f31(s1); + } + s0 = s1; + } + } + } + + return s0; + } + + function peg$parseStringLiteral() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 34) { + s1 = peg$c11; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + if (s1 !== peg$FAILED) { + s2 = []; + s3 = peg$parseDoubleStringChar(); + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = peg$parseDoubleStringChar(); + } + if (input.charCodeAt(peg$currPos) === 34) { + s3 = peg$c11; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + if (s3 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f32(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 39) { + s1 = peg$c12; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e12); } + } + if (s1 !== peg$FAILED) { + s2 = []; + s3 = peg$parseSingleStringChar(); + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = peg$parseSingleStringChar(); + } + if (input.charCodeAt(peg$currPos) === 39) { + s3 = peg$c12; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e12); } + } + if (s3 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f33(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } + + return s0; + } + + function peg$parseDoubleStringChar() { + let s0, s1; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c13) { + s1 = peg$c13; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e13); } + } + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f34(); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = input.charAt(peg$currPos); + if (peg$r0.test(s0)) { + peg$currPos++; + } else { + s0 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e14); } + } + } + + return s0; + } + + function peg$parseSingleStringChar() { + let s0, s1; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c14) { + s1 = peg$c14; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e15); } + } + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f35(); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = input.charAt(peg$currPos); + if (peg$r1.test(s0)) { + peg$currPos++; + } else { + s0 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e16); } + } + } + + return s0; + } + + function peg$parseNumberLiteral() { + let s0, s1, s2, s3, s4, s5, s6, s7, s8; + + s0 = peg$currPos; + s1 = peg$currPos; + s2 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 45) { + s3 = peg$c15; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e17); } + } + if (s3 === peg$FAILED) { + s3 = null; + } + s4 = []; + s5 = input.charAt(peg$currPos); + if (peg$r2.test(s5)) { + peg$currPos++; + } else { + s5 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e18); } + } + if (s5 !== peg$FAILED) { + while (s5 !== peg$FAILED) { + s4.push(s5); + s5 = input.charAt(peg$currPos); + if (peg$r2.test(s5)) { + peg$currPos++; + } else { + s5 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e18); } + } + } + } else { + s4 = peg$FAILED; + } + if (s4 !== peg$FAILED) { + s5 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 46) { + s6 = peg$c7; + peg$currPos++; + } else { + s6 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e7); } + } + if (s6 !== peg$FAILED) { + s7 = []; + s8 = input.charAt(peg$currPos); + if (peg$r2.test(s8)) { + peg$currPos++; + } else { + s8 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e18); } + } + if (s8 !== peg$FAILED) { + while (s8 !== peg$FAILED) { + s7.push(s8); + s8 = input.charAt(peg$currPos); + if (peg$r2.test(s8)) { + peg$currPos++; + } else { + s8 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e18); } + } + } + } else { + s7 = peg$FAILED; + } + if (s7 !== peg$FAILED) { + s6 = [s6, s7]; + s5 = s6; + } else { + peg$currPos = s5; + s5 = peg$FAILED; + } + } else { + peg$currPos = s5; + s5 = peg$FAILED; + } + if (s5 === peg$FAILED) { + s5 = null; + } + s3 = [s3, s4, s5]; + s2 = s3; + } else { + peg$currPos = s2; + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + s1 = input.substring(s1, peg$currPos); + } else { + s1 = s2; + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseLiteralLookahead(); + peg$silentFails--; + if (s3 !== peg$FAILED) { + peg$currPos = s2; + s2 = undefined; + } else { + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f36(s1); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseBooleanLiteral() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 4) === peg$c16) { + s1 = peg$c16; + peg$currPos += 4; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e19); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseLiteralLookahead(); + peg$silentFails--; + if (s3 !== peg$FAILED) { + peg$currPos = s2; + s2 = undefined; + } else { + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f37(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.substr(peg$currPos, 5) === peg$c17) { + s1 = peg$c17; + peg$currPos += 5; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e20); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseLiteralLookahead(); + peg$silentFails--; + if (s3 !== peg$FAILED) { + peg$currPos = s2; + s2 = undefined; + } else { + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f38(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } + + return s0; + } + + function peg$parseUndefinedLiteral() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 9) === peg$c18) { + s1 = peg$c18; + peg$currPos += 9; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e21); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseLiteralLookahead(); + peg$silentFails--; + if (s3 !== peg$FAILED) { + peg$currPos = s2; + s2 = undefined; + } else { + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f39(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseNullLiteral() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 4) === peg$c19) { + s1 = peg$c19; + peg$currPos += 4; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e22); } + } + if (s1 !== peg$FAILED) { + s2 = peg$currPos; + peg$silentFails++; + s3 = peg$parseLiteralLookahead(); + peg$silentFails--; + if (s3 !== peg$FAILED) { + peg$currPos = s2; + s2 = undefined; + } else { + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f40(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseLiteralLookahead() { + let s0, s1; + + s0 = peg$currPos; + peg$silentFails++; + s1 = input.charAt(peg$currPos); + if (peg$r3.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e23); } + } + peg$silentFails--; + if (s1 === peg$FAILED) { + s0 = undefined; + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseIDNonDigitStart() { + let s0, s1, s2, s3, s4; + + s0 = peg$currPos; + s1 = peg$currPos; + s2 = input.charAt(peg$currPos); + if (peg$r4.test(s2)) { + peg$currPos++; + } else { + s2 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e24); } + } + if (s2 !== peg$FAILED) { + s3 = []; + s4 = peg$parseIDContinueChar(); + while (s4 !== peg$FAILED) { + s3.push(s4); + s4 = peg$parseIDContinueChar(); + } + s2 = [s2, s3]; + s1 = s2; + } else { + peg$currPos = s1; + s1 = peg$FAILED; + } + if (s1 !== peg$FAILED) { + s0 = input.substring(s0, peg$currPos); + } else { + s0 = s1; + } + + return s0; + } + + function peg$parseIDAllowDigitStart() { + let s0, s1, s2; + + s0 = peg$currPos; + s1 = []; + s2 = peg$parseIDContinueChar(); + if (s2 !== peg$FAILED) { + while (s2 !== peg$FAILED) { + s1.push(s2); + s2 = peg$parseIDContinueChar(); + } + } else { + s1 = peg$FAILED; + } + if (s1 !== peg$FAILED) { + s0 = input.substring(s0, peg$currPos); + } else { + s0 = s1; + } + + return s0; + } + + function peg$parseIDContinueChar() { + let s0; + + s0 = input.charAt(peg$currPos); + if (peg$r5.test(s0)) { + peg$currPos++; + } else { + s0 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e25); } + } + + return s0; + } + + function peg$parseBracketSegment() { + let s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 91) { + s1 = peg$c20; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e26); } + } + if (s1 !== peg$FAILED) { + s2 = []; + s3 = peg$parseBracketChar(); + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = peg$parseBracketChar(); + } + if (input.charCodeAt(peg$currPos) === 93) { + s3 = peg$c21; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e27); } + } + if (s3 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f41(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseBracketChar() { + let s0, s1; + + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c22) { + s1 = peg$c22; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e28); } + } + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f42(); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = peg$currPos; + if (input.substr(peg$currPos, 2) === peg$c23) { + s1 = peg$c23; + peg$currPos += 2; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e29); } + } + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f43(); + } + s0 = s1; + if (s0 === peg$FAILED) { + s0 = input.charAt(peg$currPos); + if (peg$r6.test(s0)) { + peg$currPos++; + } else { + s0 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e30); } + } + } + } + + return s0; + } + + function peg$parse__() { + let s0, s1; + + s0 = []; + s1 = input.charAt(peg$currPos); + if (peg$r7.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e31); } + } + if (s1 !== peg$FAILED) { + while (s1 !== peg$FAILED) { + s0.push(s1); + s1 = input.charAt(peg$currPos); + if (peg$r7.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e31); } + } + } + } else { + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parse_() { + let s0, s1; + + s0 = []; + s1 = input.charAt(peg$currPos); + if (peg$r7.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e31); } + } + while (s1 !== peg$FAILED) { + s0.push(s1); + s1 = input.charAt(peg$currPos); + if (peg$r7.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e31); } + } + } + + return s0; + } + + peg$result = peg$startRuleFunction(); + + const peg$success = (peg$result !== peg$FAILED && peg$currPos === input.length); + function peg$throw() { + if (peg$result !== peg$FAILED && peg$currPos < input.length) { + peg$fail(peg$endExpectation()); + } + + throw peg$buildStructuredError( + peg$maxFailExpected, + peg$maxFailPos < input.length ? peg$getUnicode(peg$maxFailPos) : null, + peg$maxFailPos < input.length + ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1) + : peg$computeLocation(peg$maxFailPos, peg$maxFailPos) + ); + } + if (options.peg$library) { + return /** @type {any} */ ({ + peg$result, + peg$currPos, + peg$FAILED, + peg$maxFailExpected, + peg$maxFailPos, + peg$success, + peg$throw: peg$success ? undefined : peg$throw, + }); + } + if (peg$success) { + return peg$result; + } else { + peg$throw(); + } +} + +const peg$allowedStartRules = [ + "ExpressionWithParamsAndHash" +]; + +export { + peg$allowedStartRules as StartRules, + peg$SyntaxError as SyntaxError, + peg$parse as parse +}; diff --git a/packages/@glimmer/syntax/package.json b/packages/@glimmer/syntax/package.json index 1de5ebb4379..36db32df47e 100644 --- a/packages/@glimmer/syntax/package.json +++ b/packages/@glimmer/syntax/package.json @@ -35,7 +35,6 @@ "@glimmer/interfaces": "workspace:*", "@glimmer/util": "workspace:*", "@glimmer/wire-format": "workspace:*", - "chevrotain": "^12.0.0", "simple-html-tokenizer": "^0.5.11" }, "devDependencies": { diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml index f96bc66b0b3..6bd149784a0 100644 --- a/pnpm-lock.yaml +++ b/pnpm-lock.yaml @@ -207,6 +207,9 @@ importers: npm-run-all2: specifier: ^8.0.0 version: 8.0.4 + peggy: + specifier: ^5.1.0 + version: 5.1.0 prettier: specifier: ^3.5.3 version: 3.8.1 @@ -2150,9 +2153,6 @@ importers: '@glimmer/wire-format': specifier: workspace:* version: link:../wire-format - chevrotain: - specifier: ^12.0.0 - version: 12.0.0 simple-html-tokenizer: specifier: ^0.5.11 version: 0.5.11 @@ -3847,21 +3847,6 @@ packages: '@cacheable/utils@2.4.1': resolution: {integrity: sha512-eiFgzCbIneyMlLOmNG4g9xzF7Hv3Mga4LjxjcSC/ues6VYq2+gUbQI8JqNuw/ZM8tJIeIaBGpswAsqV2V7ApgA==} - '@chevrotain/cst-dts-gen@12.0.0': - resolution: {integrity: sha512-fSL4KXjTl7cDgf0B5Rip9Q05BOrYvkJV/RrBTE/bKDN096E4hN/ySpcBK5B24T76dlQ2i32Zc3PAE27jFnFrKg==} - - '@chevrotain/gast@12.0.0': - resolution: {integrity: sha512-1ne/m3XsIT8aEdrvT33so0GUC+wkctpUPK6zU9IlOyJLUbR0rg4G7ZiApiJbggpgPir9ERy3FRjT6T7lpgetnQ==} - - '@chevrotain/regexp-to-ast@12.0.0': - resolution: {integrity: sha512-p+EW9MaJwgaHguhoqwOtx/FwuGr+DnNn857sXWOi/mClXIkPGl3rn7hGNWvo31HA3vyeQxjqe+H36yZJwYU8cA==} - - '@chevrotain/types@12.0.0': - resolution: {integrity: sha512-S+04vjFQKeuYw0/eW3U52LkAHQsB1ASxsPGsLPUyQgrZ2iNNibQrsidruDzjEX2JYfespXMG0eZmXlhA6z7nWA==} - - '@chevrotain/utils@12.0.0': - resolution: {integrity: sha512-lB59uJoaGIfOOL9knQqQRfhl9g7x8/wqFkp13zTdkRu1huG9kg6IJs1O8hqj9rs6h7orGxHJUKb+mX3rPbWGhA==} - '@cnakazawa/watch@1.0.4': resolution: {integrity: sha512-v9kIhKwjeZThiWrLmj0y17CWoyddASLj9O2yvbZkbvw/N3rWOYy9zkV66ursAoVr0mV15bL8g0c4QZUE6cdDoQ==} engines: {node: '>=0.1.95'} @@ -4720,6 +4705,10 @@ packages: cpu: [x64] os: [win32] + '@peggyjs/from-mem@3.1.3': + resolution: {integrity: sha512-LLlgtfXIaeYXoOYovOI0spLM8ZXaqkAlmcRRrLzHJzLMqkU6Sw0R4KMoCoHx1PjaP815pSCBlS+BN6aD8t1Jgg==} + engines: {node: '>=20.8'} + '@pkgjs/parseargs@0.11.0': resolution: {integrity: sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==} engines: {node: '>=14'} @@ -6657,10 +6646,6 @@ packages: check-error@1.0.3: resolution: {integrity: sha512-iKEoDYaRmd1mxM90a2OEfWhjsjPpYPuQ+lMYsoxB126+t8fw7ySEO48nmDg5COTjxDI65/Y2OWpeEHk3ZOe8zg==} - chevrotain@12.0.0: - resolution: {integrity: sha512-csJvb+6kEiQaqo1woTdSAuOWdN0WTLIydkKrBnS+V5gZz0oqBrp4kQ35519QgK6TpBThiG3V1vNSHlIkv4AglQ==} - engines: {node: '>=22.0.0'} - chokidar@4.0.3: resolution: {integrity: sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==} engines: {node: '>= 14.16.0'} @@ -10056,6 +10041,11 @@ packages: pathval@1.1.1: resolution: {integrity: sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==} + peggy@5.1.0: + resolution: {integrity: sha512-IEo5aYRZ2kXH4Qby06cjtL114PZnwLoTiA41vUmg2vPZgANn+c87m5BUurhuDr5/cu758ZlpgsAfBVx+hhO5+w==} + engines: {node: '>=20'} + hasBin: true + picocolors@1.1.1: resolution: {integrity: sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==} @@ -10835,6 +10825,10 @@ packages: engines: {node: '>=20'} hasBin: true + source-map-generator@2.0.6: + resolution: {integrity: sha512-IlassDs1Ve8nV6uyQZXF9kdkJpVKnMte2JZQXu13M0A5zwc+vu6+LNHfmxsHBMDtoZE21RHiKI0/xvpecZRCNg==} + engines: {node: '>=20'} + source-map-js@1.2.1: resolution: {integrity: sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==} engines: {node: '>=0.10.0'} @@ -13081,21 +13075,6 @@ snapshots: hashery: 1.5.1 keyv: 5.6.0 - '@chevrotain/cst-dts-gen@12.0.0': - dependencies: - '@chevrotain/gast': 12.0.0 - '@chevrotain/types': 12.0.0 - - '@chevrotain/gast@12.0.0': - dependencies: - '@chevrotain/types': 12.0.0 - - '@chevrotain/regexp-to-ast@12.0.0': {} - - '@chevrotain/types@12.0.0': {} - - '@chevrotain/utils@12.0.0': {} - '@cnakazawa/watch@1.0.4': dependencies: exec-sh: 0.3.6 @@ -14169,6 +14148,10 @@ snapshots: '@oxc-resolver/binding-win32-x64-msvc@11.19.1': optional: true + '@peggyjs/from-mem@3.1.3': + dependencies: + semver: 7.7.4 + '@pkgjs/parseargs@0.11.0': optional: true @@ -16674,14 +16657,6 @@ snapshots: dependencies: get-func-name: 2.0.2 - chevrotain@12.0.0: - dependencies: - '@chevrotain/cst-dts-gen': 12.0.0 - '@chevrotain/gast': 12.0.0 - '@chevrotain/regexp-to-ast': 12.0.0 - '@chevrotain/types': 12.0.0 - '@chevrotain/utils': 12.0.0 - chokidar@4.0.3: dependencies: readdirp: 4.1.2 @@ -20666,6 +20641,12 @@ snapshots: pathval@1.1.1: {} + peggy@5.1.0: + dependencies: + '@peggyjs/from-mem': 3.1.3 + commander: 14.0.3 + source-map-generator: 2.0.6 + picocolors@1.1.1: {} picomatch@2.3.2: {} @@ -21609,6 +21590,8 @@ snapshots: sort-object-keys: 2.1.0 tinyglobby: 0.2.15 + source-map-generator@2.0.6: {} + source-map-js@1.2.1: {} source-map-support@0.5.21: diff --git a/rollup.config.mjs b/rollup.config.mjs index 57835844f9c..3db627d39ab 100644 --- a/rollup.config.mjs +++ b/rollup.config.mjs @@ -280,8 +280,6 @@ export function hiddenDependencies() { findFromProject('@glimmer/syntax', 'simple-html-tokenizer'), 'module' ).path, - chevrotain: entrypoint(findFromProject('@glimmer/syntax', 'chevrotain'), 'module').path, - ...chevrotainSubpackages(), ...walkGlimmerDeps(['@glimmer/compiler']), 'decorator-transforms/runtime': resolve( findFromProject('decorator-transforms').root, @@ -321,30 +319,6 @@ function walkGlimmerDeps(packageNames) { return entrypoints; } -function chevrotainSubpackages() { - const chevrotainPkg = findFromProject('@glimmer/syntax', 'chevrotain'); - const subPkgNames = [ - '@chevrotain/cst-dts-gen', - '@chevrotain/gast', - '@chevrotain/regexp-to-ast', - '@chevrotain/types', - '@chevrotain/utils', - ]; - const result = {}; - for (const name of subPkgNames) { - try { - const subPkg = packageCache.resolve(name, chevrotainPkg); - const ep = entrypoint(subPkg, 'module'); - if (ep) { - result[name] = ep.path; - } - } catch { - // sub-package not found, skip - } - } - return result; -} - function findFromProject(...names) { let current; @@ -561,9 +535,6 @@ const allowedCycles = [ // external and not causing problems 'node_modules/rsvp/lib/rsvp', - // chevrotain has internal circular deps between its modules - 'node_modules/chevrotain', - // TODO: these would be good to fix once they're in this repo 'packages/@glimmer/debug', 'packages/@glimmer/runtime', From 57f3c465f018efb40f9bb2f2cfd47162eb37d142 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Fri, 10 Apr 2026 14:24:23 -0400 Subject: [PATCH 24/54] Fix hbs-scanner: match Jison error messages for @ and invalid chars MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - After @, produce "Expecting 'ID'" (not the full token list) when the next char is invalid — matches Jison's DATA→ID token sequence - After a valid expression, produce the full Jison token list for unexpected characters like single } - Remove unused gotToken variable Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/hbs-scanner.js | 24 +++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js b/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js index e441d556472..f566b7faad0 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js @@ -609,9 +609,29 @@ class HBSScanner { e.location.start.line === 1 ? baseLocCol + e.location.start.column - 1 : e.location.start.column - 1; + const loc = this.locInfo( + { line: errLine, column: errCol }, + { line: errLine, column: errCol } + ); + + // After @, Jison expected an ID token specifically. Detect this + // by checking if the error is near the start of a @-prefixed expression. + const errPosInExpr = e.location.start.offset; + const atPos = exprText.indexOf('@'); + if (atPos !== -1 && errPosInExpr <= atPos + 2) { + const got = e.found ? `'${e.found}'` : "'EOF'"; + this.error(`Expecting 'ID', got ${got}`, loc); + } + + // For unexpected characters after a valid expression (e.g. single }), + // use the full Jison token list. Advance past the bad char for column + // parity with Jison. + if (e.found) { + this.t.advance(); + } this.error( - `Expecting 'OPEN_SEXPR', 'ID', 'OPEN_ARRAY', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', got 'INVALID'`, - this.locInfo({ line: errLine, column: errCol }, { line: errLine, column: errCol }) + `Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'OPEN_ARRAY', 'CLOSE_ARRAY', 'OPEN_BLOCK_PARAMS', 'STRING', 'NUMBER', 'BOOLEAN', 'UNDEFINED', 'NULL', 'DATA', 'SEP', 'PRIVATE_SEP', got 'INVALID'`, + loc ); } throw e; From f51d1ef1a1a08a60a5c40d027b94a988aee10c44 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Fri, 10 Apr 2026 17:59:21 -0400 Subject: [PATCH 25/54] Move path validation and partial rejection into grammar/scanner Push validation upstream so the downstream pipeline is simpler: - Path validation (./, ../, mixed .//, lone .) now in Peggy grammar's buildPath function instead of handlebars-node-visitors.ts - PartialStatement now rejected at scan time (like decorators/partial blocks already were), removing it from the visitor, abstract methods, and type definitions - Remove PartialStatement from HBS AST types, NodeMap, Statement union, and Parser abstract methods Co-Authored-By: Claude Opus 4.6 (1M context) --- .../syntax/lib/hbs-parser/hbs-scanner.js | 22 +++--------- .../@glimmer/syntax/lib/hbs-parser/hbs.peggy | 23 ++++++++++++ .../@glimmer/syntax/lib/hbs-parser/parser.js | 23 ++++++++++++ packages/@glimmer/syntax/lib/parser.ts | 1 - .../lib/parser/handlebars-node-visitors.ts | 36 +++---------------- .../@glimmer/syntax/lib/v1/handlebars-ast.ts | 17 ++------- 6 files changed, 56 insertions(+), 66 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js b/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js index f566b7faad0..9a612cbcf38 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/hbs-scanner.js @@ -750,24 +750,10 @@ class HBSScanner { } handlePartial(openRaw, outerStart) { - const exprStartLine = this.t.line; - const exprStartCol = this.t.column; - - const exprText = this.extractExpressionText(false); - const parsed = this.parseExpression(exprText, exprStartLine, exprStartCol); - - const closeRaw = this.consumeClose(); - const end = this.t.loc(); - - return { - type: 'PartialStatement', - name: parsed.expr, - params: parsed.params, - hash: parsed.hash, - indent: '', - strip: this.stripFlags(openRaw, closeRaw), - loc: this.locInfo(outerStart, end), - }; + this.error( + 'Handlebars partials are not supported in Glimmer', + this.locInfo(outerStart, this.t.loc()) + ); } handlePartialBlock(openRaw, outerStart) { diff --git a/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy b/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy index f11edbaab9a..cb4550cad28 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy +++ b/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy @@ -10,10 +10,13 @@ {{ // Helper: build a PathExpression AST node from parsed segments. +// Also validates Glimmer-specific restrictions on paths. function buildPath(data, segments, loc) { let original = data ? '@' : ''; let tail = []; let isThis = false; + let hasDot = false; + let hasSlash = false; for (let i = 0; i < segments.length; i++) { let seg = segments[i]; @@ -22,6 +25,9 @@ function buildPath(data, segments, loc) { let separator = seg.separator || ''; let partPrefix = separator === '.#' ? '#' : ''; + if (separator === '.' || separator === '.#') hasDot = true; + if (separator === '/') hasSlash = true; + original += separator + seg.original; if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { @@ -35,6 +41,23 @@ function buildPath(data, segments, loc) { } } + // Glimmer-specific path restrictions + if (hasSlash) { + if (original.startsWith('./')) { + error("Using './' is not supported in Glimmer and unnecessary"); + } + if (original.startsWith('../')) { + error("Changing context using '../' is not supported in Glimmer"); + } + if (hasDot) { + error("Mixing '.' and '/' in paths is not supported in Glimmer; use only '.' to separate property paths"); + } + } + + if (original === '.') { + error("'.' is not a supported path in Glimmer; check for a path with a trailing '.'"); + } + let head = tail.shift(); return { diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parser.js b/packages/@glimmer/syntax/lib/hbs-parser/parser.js index 7d67000d93b..d04d62e222f 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parser.js @@ -5,10 +5,13 @@ // Helper: build a PathExpression AST node from parsed segments. +// Also validates Glimmer-specific restrictions on paths. function buildPath(data, segments, loc) { let original = data ? '@' : ''; let tail = []; let isThis = false; + let hasDot = false; + let hasSlash = false; for (let i = 0; i < segments.length; i++) { let seg = segments[i]; @@ -17,6 +20,9 @@ function buildPath(data, segments, loc) { let separator = seg.separator || ''; let partPrefix = separator === '.#' ? '#' : ''; + if (separator === '.' || separator === '.#') hasDot = true; + if (separator === '/') hasSlash = true; + original += separator + seg.original; if (!isLiteral && (part === '..' || part === '.' || part === 'this')) { @@ -30,6 +36,23 @@ function buildPath(data, segments, loc) { } } + // Glimmer-specific path restrictions + if (hasSlash) { + if (original.startsWith('./')) { + error("Using './' is not supported in Glimmer and unnecessary"); + } + if (original.startsWith('../')) { + error("Changing context using '../' is not supported in Glimmer"); + } + if (hasDot) { + error("Mixing '.' and '/' in paths is not supported in Glimmer; use only '.' to separate property paths"); + } + } + + if (original === '.') { + error("'.' is not a supported path in Glimmer; check for a path with a trailing '.'"); + } + let head = tail.shift(); return { diff --git a/packages/@glimmer/syntax/lib/parser.ts b/packages/@glimmer/syntax/lib/parser.ts index 51b1b0695b8..c39b780015d 100644 --- a/packages/@glimmer/syntax/lib/parser.ts +++ b/packages/@glimmer/syntax/lib/parser.ts @@ -91,7 +91,6 @@ export abstract class Parser { abstract Program(node: HBS.Program): HBS.Output<'Program'>; abstract MustacheStatement(node: HBS.MustacheStatement): HBS.Output<'MustacheStatement'>; abstract BlockStatement(node: HBS.BlockStatement): HBS.Output<'BlockStatement'>; - abstract PartialStatement(node: HBS.PartialStatement): HBS.Output<'PartialStatement'>; abstract ContentStatement(node: HBS.ContentStatement): HBS.Output<'ContentStatement'>; abstract CommentStatement(node: HBS.CommentStatement): HBS.Output<'CommentStatement'>; abstract SubExpression(node: HBS.SubExpression): HBS.Output<'SubExpression'>; diff --git a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts index 85430b75718..ccf43441ec6 100644 --- a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts +++ b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts @@ -299,15 +299,8 @@ export abstract class HandlebarsNodeVisitors extends Parser { this.currentAttr.currentPart = null; } - PartialStatement(partial: HBS.PartialStatement): never { - throw generateSyntaxError( - `Handlebars partials are not supported`, - this.source.spanFor(partial.loc) - ); - } - - // Decorator, DecoratorBlock, and PartialBlockStatement are rejected at - // parse time in hbs-parser/rd-parser.js and never reach the visitor layer. + // Partials, decorators, decorator blocks, and partial blocks are all + // rejected at parse time in the scanner/grammar and never reach here. ContentStatement(content: HBS.ContentStatement): void { updateTokenizerLocation(this.tokenizer, content); @@ -357,31 +350,10 @@ export abstract class HandlebarsNodeVisitors extends Parser { const { original } = path; let parts: string[]; + // Path validation (./, ../, mixed separators, lone .) is now handled + // at parse time in the Peggy grammar (hbs.peggy buildPath). if (original.indexOf('/') !== -1) { - if (original.slice(0, 2) === './') { - throw generateSyntaxError( - `Using "./" is not supported in Glimmer and unnecessary`, - this.source.spanFor(path.loc) - ); - } - if (original.slice(0, 3) === '../') { - throw generateSyntaxError( - `Changing context using "../" is not supported in Glimmer`, - this.source.spanFor(path.loc) - ); - } - if (original.indexOf('.') !== -1) { - throw generateSyntaxError( - `Mixing '.' and '/' in paths is not supported in Glimmer; use only '.' to separate property paths`, - this.source.spanFor(path.loc) - ); - } parts = [path.parts.join('/')]; - } else if (original === '.') { - throw generateSyntaxError( - `'.' is not a supported path in Glimmer; check for a path with a trailing '.'`, - this.source.spanFor(path.loc) - ); } else { parts = path.parts; } diff --git a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts index 3eb57d4b015..3d07939cb16 100644 --- a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts +++ b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts @@ -18,7 +18,6 @@ export interface NodeMap { Program: { input: Program; output: ASTv1.Block }; MustacheStatement: { input: MustacheStatement; output: ASTv1.MustacheStatement | void }; BlockStatement: { input: BlockStatement; output: ASTv1.BlockStatement | void }; - PartialStatement: { input: PartialStatement; output: never }; ContentStatement: { input: ContentStatement; output: void }; CommentStatement: { input: CommentStatement; output: ASTv1.MustacheCommentStatement | null }; SubExpression: { input: SubExpression; output: ASTv1.SubExpression }; @@ -58,12 +57,7 @@ export interface Program extends Omit { chained?: boolean; } -export type Statement = - | MustacheStatement - | BlockStatement - | PartialStatement - | ContentStatement - | CommentStatement; +export type Statement = MustacheStatement | BlockStatement | ContentStatement | CommentStatement; export interface CommonMustache extends CommonNode { path: Expression; @@ -93,14 +87,7 @@ export interface BlockStatement extends CommonBlock { type: 'BlockStatement'; } -export interface PartialStatement extends CommonNode { - type: 'PartialStatement'; - name: PathExpression | SubExpression; - params: Expression[]; - hash: Hash; - indent: string; - strip: StripFlags; -} +// PartialStatement is rejected at parse time and never reaches the visitor. export interface ContentStatement extends CommonNode { type: 'ContentStatement'; From b4c7efb9e9bf80aaa71fefc198bf06d1f4982467 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Fri, 10 Apr 2026 18:10:24 -0400 Subject: [PATCH 26/54] Grammar produces head/tail directly on PathExpression The Peggy grammar now produces structured head objects with type (ThisHead/AtHead/VarHead), name, and location directly in buildPath(). The visitor's PathExpression method is now a simple pass-through instead of 60+ lines of reconstruction logic. Co-Authored-By: Claude Opus 4.6 (1M context) --- .../@glimmer/syntax/lib/hbs-parser/hbs.peggy | 48 +++++++++---- .../@glimmer/syntax/lib/hbs-parser/parser.js | 48 +++++++++---- .../lib/parser/handlebars-node-visitors.ts | 69 ++++--------------- .../@glimmer/syntax/lib/v1/handlebars-ast.ts | 8 +++ 4 files changed, 91 insertions(+), 82 deletions(-) diff --git a/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy b/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy index cb4550cad28..297401becf9 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy +++ b/packages/@glimmer/syntax/lib/hbs-parser/hbs.peggy @@ -10,13 +10,16 @@ {{ // Helper: build a PathExpression AST node from parsed segments. -// Also validates Glimmer-specific restrictions on paths. +// Produces head/tail structure directly so the downstream visitor +// doesn't need to reconstruct it. function buildPath(data, segments, loc) { let original = data ? '@' : ''; let tail = []; let isThis = false; let hasDot = false; let hasSlash = false; + let headName = undefined; + let headLoc = undefined; for (let i = 0; i < segments.length; i++) { let seg = segments[i]; @@ -37,7 +40,12 @@ function buildPath(data, segments, loc) { isThis = true; } } else { - tail.push(partPrefix + part); + if (headName === undefined) { + headName = partPrefix + part; + headLoc = seg.loc; + } else { + tail.push(partPrefix + part); + } } } @@ -58,7 +66,21 @@ function buildPath(data, segments, loc) { error("'.' is not a supported path in Glimmer; check for a path with a trailing '.'"); } - let head = tail.shift(); + // Build the structured head object + let head; + if (isThis) { + head = { type: 'ThisHead', loc: { start: loc.start, end: { line: loc.start.line, column: loc.start.column + 4 } } }; + } else if (data) { + if (headName === undefined) { + error("Paths beginning with @ must start with a-z"); + } + head = { type: 'AtHead', name: '@' + headName, loc: headLoc ? { start: loc.start, end: { line: loc.start.line, column: loc.start.column + headName.length + 1 } } : loc }; + } else { + if (headName === undefined) { + error("Paths must start with a-z or A-Z"); + } + head = { type: 'VarHead', name: headName, loc: headLoc || loc }; + } return { type: 'PathExpression', @@ -66,7 +88,7 @@ function buildPath(data, segments, loc) { data: !!data, head: head, tail: tail, - parts: head !== undefined ? [head, ...tail] : tail, + parts: headName !== undefined ? [headName, ...tail] : tail, original: original, loc: loc, }; @@ -210,17 +232,17 @@ RestPathSegment / "/" seg:PathSegmentAfterSep { return { ...seg, separator: '/' }; } FirstPathSegment - = seg:BracketSegment { return { part: idFromBracket(seg), original: seg }; } - / ".." { return { part: '..', original: '..' }; } - / "." !IDContinueChar { return { part: '.', original: '.' }; } - / "this" !IDContinueChar { return { part: 'this', original: 'this' }; } - / id:IDNonDigitStart { return { part: id, original: id }; } + = seg:BracketSegment { return { part: idFromBracket(seg), original: seg, loc: location() }; } + / ".." { return { part: '..', original: '..', loc: location() }; } + / "." !IDContinueChar { return { part: '.', original: '.', loc: location() }; } + / "this" !IDContinueChar { return { part: 'this', original: 'this', loc: location() }; } + / id:IDNonDigitStart { return { part: id, original: id, loc: location() }; } PathSegmentAfterSep - = seg:BracketSegment { return { part: idFromBracket(seg), original: seg }; } - / ".." { return { part: '..', original: '..' }; } - / "." !IDContinueChar { return { part: '.', original: '.' }; } - / id:IDAllowDigitStart { return { part: id, original: id }; } + = seg:BracketSegment { return { part: idFromBracket(seg), original: seg, loc: location() }; } + / ".." { return { part: '..', original: '..', loc: location() }; } + / "." !IDContinueChar { return { part: '.', original: '.', loc: location() }; } + / id:IDAllowDigitStart { return { part: id, original: id, loc: location() }; } // ============================================================================ // Literals diff --git a/packages/@glimmer/syntax/lib/hbs-parser/parser.js b/packages/@glimmer/syntax/lib/hbs-parser/parser.js index d04d62e222f..c8844b4730e 100644 --- a/packages/@glimmer/syntax/lib/hbs-parser/parser.js +++ b/packages/@glimmer/syntax/lib/hbs-parser/parser.js @@ -5,13 +5,16 @@ // Helper: build a PathExpression AST node from parsed segments. -// Also validates Glimmer-specific restrictions on paths. +// Produces head/tail structure directly so the downstream visitor +// doesn't need to reconstruct it. function buildPath(data, segments, loc) { let original = data ? '@' : ''; let tail = []; let isThis = false; let hasDot = false; let hasSlash = false; + let headName = undefined; + let headLoc = undefined; for (let i = 0; i < segments.length; i++) { let seg = segments[i]; @@ -32,7 +35,12 @@ function buildPath(data, segments, loc) { isThis = true; } } else { - tail.push(partPrefix + part); + if (headName === undefined) { + headName = partPrefix + part; + headLoc = seg.loc; + } else { + tail.push(partPrefix + part); + } } } @@ -53,7 +61,21 @@ function buildPath(data, segments, loc) { error("'.' is not a supported path in Glimmer; check for a path with a trailing '.'"); } - let head = tail.shift(); + // Build the structured head object + let head; + if (isThis) { + head = { type: 'ThisHead', loc: { start: loc.start, end: { line: loc.start.line, column: loc.start.column + 4 } } }; + } else if (data) { + if (headName === undefined) { + error("Paths beginning with @ must start with a-z"); + } + head = { type: 'AtHead', name: '@' + headName, loc: headLoc ? { start: loc.start, end: { line: loc.start.line, column: loc.start.column + headName.length + 1 } } : loc }; + } else { + if (headName === undefined) { + error("Paths must start with a-z or A-Z"); + } + head = { type: 'VarHead', name: headName, loc: headLoc || loc }; + } return { type: 'PathExpression', @@ -61,7 +83,7 @@ function buildPath(data, segments, loc) { data: !!data, head: head, tail: tail, - parts: head !== undefined ? [head, ...tail] : tail, + parts: headName !== undefined ? [headName, ...tail] : tail, original: original, loc: loc, }; @@ -359,15 +381,15 @@ function peg$parse(input, options) { function peg$f20(seg) { return { ...seg, separator: '.#' }; } function peg$f21(seg) { return { ...seg, separator: '.' }; } function peg$f22(seg) { return { ...seg, separator: '/' }; } - function peg$f23(seg) { return { part: idFromBracket(seg), original: seg }; } - function peg$f24() { return { part: '..', original: '..' }; } - function peg$f25() { return { part: '.', original: '.' }; } - function peg$f26() { return { part: 'this', original: 'this' }; } - function peg$f27(id) { return { part: id, original: id }; } - function peg$f28(seg) { return { part: idFromBracket(seg), original: seg }; } - function peg$f29() { return { part: '..', original: '..' }; } - function peg$f30() { return { part: '.', original: '.' }; } - function peg$f31(id) { return { part: id, original: id }; } + function peg$f23(seg) { return { part: idFromBracket(seg), original: seg, loc: location() }; } + function peg$f24() { return { part: '..', original: '..', loc: location() }; } + function peg$f25() { return { part: '.', original: '.', loc: location() }; } + function peg$f26() { return { part: 'this', original: 'this', loc: location() }; } + function peg$f27(id) { return { part: id, original: id, loc: location() }; } + function peg$f28(seg) { return { part: idFromBracket(seg), original: seg, loc: location() }; } + function peg$f29() { return { part: '..', original: '..', loc: location() }; } + function peg$f30() { return { part: '.', original: '.', loc: location() }; } + function peg$f31(id) { return { part: id, original: id, loc: location() }; } function peg$f32(chars) { let value = chars.join(''); return { diff --git a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts index ccf43441ec6..5b0eca124e3 100644 --- a/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts +++ b/packages/@glimmer/syntax/lib/parser/handlebars-node-visitors.ts @@ -347,68 +347,25 @@ export abstract class HandlebarsNodeVisitors extends Parser { } PathExpression(path: HBS.PathExpression): ASTv1.PathExpression { - const { original } = path; - let parts: string[]; - - // Path validation (./, ../, mixed separators, lone .) is now handled - // at parse time in the Peggy grammar (hbs.peggy buildPath). - if (original.indexOf('/') !== -1) { - parts = [path.parts.join('/')]; - } else { - parts = path.parts; - } - - // The parser now correctly sets path.this for expressions like {{this.foo}}. - // We use that directly instead of re-deriving from the original string. - let thisHead = path.this; - + // The grammar now produces head/tail directly with proper types and locations. + const headLoc = this.source.spanFor(path.head.loc); let pathHead: ASTv1.PathHead; - if (thisHead) { - pathHead = b.this({ - loc: this.source.spanFor({ - start: path.loc.start, - end: { line: path.loc.start.line, column: path.loc.start.column + 4 }, - }), - }); - } else if (path.data) { - const head = parts.shift(); - if (head === undefined) { - throw generateSyntaxError( - `Attempted to parse a path expression, but it was not valid. Paths beginning with @ must start with a-z.`, - this.source.spanFor(path.loc) - ); - } - - pathHead = b.atName({ - name: `@${head}`, - loc: this.source.spanFor({ - start: path.loc.start, - end: { line: path.loc.start.line, column: path.loc.start.column + head.length + 1 }, - }), - }); - } else { - const head = parts.shift(); - - if (head === undefined) { - throw generateSyntaxError( - `Attempted to parse a path expression, but it was not valid. Paths must start with a-z or A-Z.`, - this.source.spanFor(path.loc) - ); - } - - pathHead = b.var({ - name: head, - loc: this.source.spanFor({ - start: path.loc.start, - end: { line: path.loc.start.line, column: path.loc.start.column + head.length }, - }), - }); + switch (path.head.type) { + case 'ThisHead': + pathHead = b.this({ loc: headLoc }); + break; + case 'AtHead': + pathHead = b.atName({ name: path.head.name as string, loc: headLoc }); + break; + case 'VarHead': + pathHead = b.var({ name: path.head.name as string, loc: headLoc }); + break; } return b.path({ head: pathHead, - tail: parts, + tail: path.tail, loc: this.source.spanFor(path.loc), }); } diff --git a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts index 3d07939cb16..aa41dc2a9d0 100644 --- a/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts +++ b/packages/@glimmer/syntax/lib/v1/handlebars-ast.ts @@ -110,10 +110,18 @@ export interface SubExpression extends CommonNode { hash: Hash; } +export interface PathHead { + type: 'ThisHead' | 'AtHead' | 'VarHead'; + name?: string; + loc: SourceLocation | { start: Position; end: Position }; +} + export interface PathExpression extends CommonNode { type: 'PathExpression'; this: boolean; data: boolean; + head: PathHead; + tail: string[]; parts: string[]; original: string; } From 5363114b31805fc446a22798afeeb6b514f4ad58 Mon Sep 17 00:00:00 2001 From: NullVoxPopuli <199018+NullVoxPopuli@users.noreply.github.com> Date: Fri, 10 Apr 2026 18:24:26 -0400 Subject: [PATCH 27/54] SPIKE: Full HTML+Handlebars Peggy grammar producing ASTv1 directly MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Extends the Peggy grammar from expression-only (322 lines) to full template parsing (1048 lines) that handles both HTML and Handlebars syntax, producing ASTv1-shaped nodes directly. This is exposed as preprocessDirect() — a new export alongside the existing preprocess(). The existing pipeline is unchanged; this is additive. What the grammar handles: - HTML elements (open/close, self-closing, void elements) - Attributes (static, dynamic {{expr}}, concat "prefix {{expr}}") - Element modifiers ({{on "click" handler}}) - Block params (as |foo bar|) - Named blocks (<:name>) - Mustaches ({{expr}}, {{{unescaped}}}, strip flags) - Block statements ({{#if}}...{{else}}...{{/if}}, chained else-if) - HTML comments () - Mustache comments ({{! }}, {{!-- --}}) - Escaped mustaches (\{{literal}}) - Text content What's NOT yet implemented: - Whitespace control (standalone block stripping) - Entity decoding (& etc.) - Raw content tags (